diff --git a/pyproject.toml b/pyproject.toml
index 553ddcda7..64d767b21 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -190,6 +190,7 @@ plugins = [
 ]
 python_version = "3.8"
 warn_unused_configs = true
+warn_unused_ignores = true
 warn_return_any = true
 
 [[tool.mypy.overrides]]
@@ -249,6 +250,7 @@ select = [
     "ARG",  # flake8-unused-arguments
     "PTH",  # flake8-use-pathlib
     "ERA",  # eradicate
+    "PGH",  # pygrep-hooks
 ]
 src = ["samples", "singer_sdk", "tests"]
 target-version = "py37"
diff --git a/singer_sdk/_singerlib/catalog.py b/singer_sdk/_singerlib/catalog.py
index 54caa99e9..22d3e122d 100644
--- a/singer_sdk/_singerlib/catalog.py
+++ b/singer_sdk/_singerlib/catalog.py
@@ -155,7 +155,7 @@ def root(self) -> StreamMetadata:
         Returns:
             Stream metadata.
         """
-        return self[()]  # type: ignore
+        return self[()]  # type: ignore[return-value]
 
     @classmethod
     def get_standard_metadata(
diff --git a/singer_sdk/authenticators.py b/singer_sdk/authenticators.py
index 727c29110..51b2c4413 100644
--- a/singer_sdk/authenticators.py
+++ b/singer_sdk/authenticators.py
@@ -74,7 +74,7 @@ def __call__(cls, *args: Any, **kwargs: Any) -> Any:  # noqa: ANN401
         """
         if cls.__single_instance:
             return cls.__single_instance
-        single_obj = cls.__new__(cls, None)  # type: ignore
+        single_obj = cls.__new__(cls, None)  # type: ignore[call-overload]
         single_obj.__init__(*args, **kwargs)
         cls.__single_instance = single_obj
         return single_obj
diff --git a/singer_sdk/helpers/_compat.py b/singer_sdk/helpers/_compat.py
index ff9346b7c..b89984691 100644
--- a/singer_sdk/helpers/_compat.py
+++ b/singer_sdk/helpers/_compat.py
@@ -2,16 +2,13 @@
 
 from __future__ import annotations
 
-try:
-    from typing import final
-except ImportError:
-    # Final not available until Python3.8
-    final = lambda f: f  # noqa: E731
+import sys
 
-try:
+if sys.version_info < (3, 8):
+    import importlib_metadata as metadata
+    from typing_extensions import final
+else:
     from importlib import metadata
-except ImportError:
-    # Running on pre-3.8 Python; use importlib-metadata package
-    import importlib_metadata as metadata  # type: ignore
+    from typing import final
 
 __all__ = ["metadata", "final"]
diff --git a/singer_sdk/helpers/_simpleeval.py b/singer_sdk/helpers/_simpleeval.py
index 2243cd3e5..c3fb41c3f 100644
--- a/singer_sdk/helpers/_simpleeval.py
+++ b/singer_sdk/helpers/_simpleeval.py
@@ -126,7 +126,7 @@
 # builtins is a dict in python >3.6 but a module before
 DISALLOW_FUNCTIONS = {type, isinstance, eval, getattr, setattr, repr, compile, open}
 if hasattr(__builtins__, "help") or (
-    hasattr(__builtins__, "__contains__") and "help" in __builtins__  # type: ignore
+    hasattr(__builtins__, "__contains__") and "help" in __builtins__
 ):
     # PyInstaller environment doesn't include this module.
     DISALLOW_FUNCTIONS.add(help)
diff --git a/singer_sdk/helpers/_state.py b/singer_sdk/helpers/_state.py
index 69909290c..c01ff29bf 100644
--- a/singer_sdk/helpers/_state.py
+++ b/singer_sdk/helpers/_state.py
@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Callable, cast
+from typing import TYPE_CHECKING, Any, Callable, TypeVar, cast
 
 from singer_sdk.exceptions import InvalidStreamSortException
 from singer_sdk.helpers._typing import to_json_compatible
@@ -10,6 +10,8 @@
 if TYPE_CHECKING:
     import datetime
 
+    _T = TypeVar("_T", datetime.datetime, str, int, float)
+
 PROGRESS_MARKERS = "progress_markers"
 PROGRESS_MARKER_NOTE = "Note"
 SIGNPOST_MARKER = "replication_key_signpost"
@@ -224,13 +226,12 @@ def increment_state(
 
 
 def _greater_than_signpost(
-    signpost: datetime.datetime | str | int | float,
-    new_value: datetime.datetime | str | int | float,
+    signpost: _T,
+    new_value: _T,
 ) -> bool:
     """Compare and return True if new_value is greater than signpost."""
-    return (  # fails if signpost and bookmark are incompatible types
-        new_value > signpost  # type: ignore
-    )
+    # fails if signpost and bookmark are incompatible types
+    return new_value > signpost
 
 
 def finalize_state_progress_markers(stream_or_partition_state: dict) -> dict | None:
diff --git a/singer_sdk/mapper_base.py b/singer_sdk/mapper_base.py
index 09f3d8940..bc7880dce 100644
--- a/singer_sdk/mapper_base.py
+++ b/singer_sdk/mapper_base.py
@@ -164,7 +164,7 @@ def cli(
                 cls._env_prefix,
             )
 
-            mapper = cls(  # type: ignore  # Ignore 'type not callable'
+            mapper = cls(  # type: ignore[operator]
                 config=config_dict,
                 validate_config=validate_config,
             )
diff --git a/singer_sdk/streams/graphql.py b/singer_sdk/streams/graphql.py
index 00e19f44b..824ad04fa 100644
--- a/singer_sdk/streams/graphql.py
+++ b/singer_sdk/streams/graphql.py
@@ -22,7 +22,7 @@ class GraphQLStream(RESTStream, metaclass=abc.ABCMeta):
     rest_method = "POST"
 
     @classproperty
-    def records_jsonpath(cls) -> str:  # type: ignore  # OK: str vs @classproperty
+    def records_jsonpath(cls) -> str:  # type: ignore[override]
         """Get the JSONPath expression to extract records from an API response.
 
         Returns:
diff --git a/singer_sdk/streams/rest.py b/singer_sdk/streams/rest.py
index edb760ffe..5bee7cd84 100644
--- a/singer_sdk/streams/rest.py
+++ b/singer_sdk/streams/rest.py
@@ -495,7 +495,7 @@ def get_new_paginator(self) -> BaseAPIPaginator:
                 DeprecationWarning,
                 stacklevel=2,
             )
-            return LegacyStreamPaginator(self)  # type: ignore
+            return LegacyStreamPaginator(self)
 
         if self.next_page_token_jsonpath:
             return JSONPathPaginator(self.next_page_token_jsonpath)
@@ -588,7 +588,7 @@ def backoff_wait_generator(self) -> Generator[float, None, None]:
         Returns:
             The wait generator
         """
-        return backoff.expo(factor=2)  # type: ignore # ignore 'Returning Any'
+        return backoff.expo(factor=2)
 
     def backoff_max_tries(self) -> int:
         """The number of attempts before giving up when retrying requests.
diff --git a/singer_sdk/tap_base.py b/singer_sdk/tap_base.py
index 959a5a63a..cae8b7dc5 100644
--- a/singer_sdk/tap_base.py
+++ b/singer_sdk/tap_base.py
@@ -86,7 +86,7 @@ def __init__(
         if isinstance(catalog, Catalog):
             self._input_catalog = catalog
         elif isinstance(catalog, dict):
-            self._input_catalog = Catalog.from_dict(catalog)  # type: ignore
+            self._input_catalog = Catalog.from_dict(catalog)  # type: ignore[arg-type]
         elif catalog is not None:
             self._input_catalog = Catalog.from_dict(read_json_file(catalog))
 
@@ -490,7 +490,7 @@ def cli(
 
                 config_files.append(Path(config_path))
 
-            tap = cls(  # type: ignore  # Ignore 'type not callable'
+            tap = cls(  # type: ignore[operator]
                 config=config_files or None,
                 state=state,
                 catalog=catalog,
diff --git a/singer_sdk/target_base.py b/singer_sdk/target_base.py
index 850691c2b..406b1912d 100644
--- a/singer_sdk/target_base.py
+++ b/singer_sdk/target_base.py
@@ -569,7 +569,7 @@ def cli(
 
                 config_files.append(Path(config_path))
 
-            target = cls(  # type: ignore  # Ignore 'type not callable'
+            target = cls(  # type: ignore[operator]
                 config=config_files or None,
                 parse_env_config=parse_env_config,
                 validate_config=validate_config,
diff --git a/singer_sdk/testing/factory.py b/singer_sdk/testing/factory.py
index 1c90f2d68..152494127 100644
--- a/singer_sdk/testing/factory.py
+++ b/singer_sdk/testing/factory.py
@@ -58,7 +58,7 @@ def runner(self) -> TapTestRunner | TargetTestRunner:
 
     for suite in test_suites:
         # make sure given runner is of type TapTestRunner
-        expected_runner_class = (  # type: ignore[valid-type]
+        expected_runner_class = (
             TapTestRunner
             if suite.kind in {"tap", "tap_stream", "tap_stream_attribute"}
             else TargetTestRunner
diff --git a/singer_sdk/typing.py b/singer_sdk/typing.py
index 4ae32e921..5ec5363c0 100644
--- a/singer_sdk/typing.py
+++ b/singer_sdk/typing.py
@@ -382,7 +382,7 @@ def __init__(self, wrapped_type: W | type[W]) -> None:
         self.wrapped_type = wrapped_type
 
     @property
-    def type_dict(self) -> dict:  # type: ignore  # OK: @classproperty vs @property
+    def type_dict(self) -> dict:  # type: ignore[override]
         """Get type dictionary.
 
         Returns:
@@ -435,7 +435,7 @@ def __init__(
         self.examples = examples or None
 
     @property
-    def type_dict(self) -> dict:  # type: ignore  # OK: @classproperty vs @property
+    def type_dict(self) -> dict:  # type: ignore[override]
         """Get type dictionary.
 
         Returns:
@@ -577,7 +577,7 @@ def __init__(
         self.pattern_properties = pattern_properties
 
     @property
-    def type_dict(self) -> dict:  # type: ignore  # OK: @classproperty vs @property
+    def type_dict(self) -> dict:  # type: ignore[override]
         """Get type dictionary.
 
         Returns:
@@ -620,7 +620,7 @@ def __init__(self, jsonschema_type_dict: dict) -> None:
         self._jsonschema_type_dict = jsonschema_type_dict
 
     @property
-    def type_dict(self) -> dict:  # type: ignore  # OK: @classproperty vs @property
+    def type_dict(self) -> dict:  # type: ignore[override]
         """Get type dictionary.
 
         Returns: