diff --git a/python/cudf/cudf/core/udf/groupby_typing.py b/python/cudf/cudf/core/udf/groupby_typing.py
index 37381a95fdf..bc6a084f2b4 100644
--- a/python/cudf/cudf/core/udf/groupby_typing.py
+++ b/python/cudf/cudf/core/udf/groupby_typing.py
@@ -17,9 +17,14 @@
 
 index_default_type = types.int64
 group_size_type = types.int64
-SUPPORTED_GROUPBY_NUMBA_TYPES = [types.int64, types.float64]
+SUPPORTED_GROUPBY_NUMBA_TYPES = [
+    types.int32,
+    types.int64,
+    types.float32,
+    types.float64,
+]
 SUPPORTED_GROUPBY_NUMPY_TYPES = [
-    numpy_support.as_dtype(dt) for dt in [types.int64, types.float64]
+    numpy_support.as_dtype(dt) for dt in SUPPORTED_GROUPBY_NUMBA_TYPES
 ]
 
 
@@ -133,6 +138,25 @@ def caller(data, index, size):
     call_cuda_functions[funcname.lower()][type_key] = caller
 
 
+def _make_unary_attr(funcname):
+    class GroupUnaryReductionAttrTyping(AbstractTemplate):
+        key = f"GroupType.{funcname}"
+
+        def generic(self, args, kws):
+            for retty, inputty in call_cuda_functions[funcname.lower()].keys():
+                if self.this.group_scalar_type == inputty:
+                    return nb_signature(retty, recvr=self.this)
+            return None
+
+    def _attr(self, mod):
+        return types.BoundFunction(
+            GroupUnaryReductionAttrTyping,
+            GroupType(mod.group_scalar_type, mod.index_type),
+        )
+
+    return _attr
+
+
 def _create_reduction_attr(name, retty=None):
     class Attr(AbstractTemplate):
         key = name
@@ -171,9 +195,13 @@ def generic(self, args, kws):
 class GroupAttr(AttributeTemplate):
     key = GroupType
 
-    resolve_max = _create_reduction_attr("GroupType.max")
-    resolve_min = _create_reduction_attr("GroupType.min")
-    resolve_sum = _create_reduction_attr("GroupType.sum")
+    resolve_max = _make_unary_attr("max")
+    resolve_min = _make_unary_attr("min")
+    resolve_sum = _make_unary_attr("sum")
+
+    resolve_mean = _make_unary_attr("mean")
+    resolve_var = _make_unary_attr("var")
+    resolve_std = _make_unary_attr("std")
 
     resolve_size = _create_reduction_attr(
         "GroupType.size", retty=group_size_type
@@ -181,11 +209,6 @@ class GroupAttr(AttributeTemplate):
     resolve_count = _create_reduction_attr(
         "GroupType.count", retty=types.int64
     )
-    resolve_mean = _create_reduction_attr(
-        "GroupType.mean", retty=types.float64
-    )
-    resolve_var = _create_reduction_attr("GroupType.var", retty=types.float64)
-    resolve_std = _create_reduction_attr("GroupType.std", retty=types.float64)
 
     def resolve_idxmax(self, mod):
         return types.BoundFunction(
@@ -201,13 +224,30 @@ def resolve_idxmin(self, mod):
 for ty in SUPPORTED_GROUPBY_NUMBA_TYPES:
     _register_cuda_reduction_caller("Max", ty, ty)
     _register_cuda_reduction_caller("Min", ty, ty)
-    _register_cuda_reduction_caller("Sum", ty, ty)
-    _register_cuda_reduction_caller("Mean", ty, types.float64)
-    _register_cuda_reduction_caller("Std", ty, types.float64)
-    _register_cuda_reduction_caller("Var", ty, types.float64)
     _register_cuda_idx_reduction_caller("IdxMax", ty)
     _register_cuda_idx_reduction_caller("IdxMin", ty)
 
+_register_cuda_reduction_caller("Sum", types.int32, types.int64)
+_register_cuda_reduction_caller("Sum", types.int64, types.int64)
+_register_cuda_reduction_caller("Sum", types.float32, types.float32)
+_register_cuda_reduction_caller("Sum", types.float64, types.float64)
+
+
+_register_cuda_reduction_caller("Mean", types.int32, types.float64)
+_register_cuda_reduction_caller("Mean", types.int64, types.float64)
+_register_cuda_reduction_caller("Mean", types.float32, types.float32)
+_register_cuda_reduction_caller("Mean", types.float64, types.float64)
+
+_register_cuda_reduction_caller("Std", types.int32, types.float64)
+_register_cuda_reduction_caller("Std", types.int64, types.float64)
+_register_cuda_reduction_caller("Std", types.float32, types.float32)
+_register_cuda_reduction_caller("Std", types.float64, types.float64)
+
+_register_cuda_reduction_caller("Var", types.int32, types.float64)
+_register_cuda_reduction_caller("Var", types.int64, types.float64)
+_register_cuda_reduction_caller("Var", types.float32, types.float32)
+_register_cuda_reduction_caller("Var", types.float64, types.float64)
+
 
 for attr in ("group_data", "index", "size"):
     make_attribute_wrapper(GroupType, attr, attr)
diff --git a/python/cudf/cudf/tests/test_groupby.py b/python/cudf/cudf/tests/test_groupby.py
index dde80639fc7..48092be390d 100644
--- a/python/cudf/cudf/tests/test_groupby.py
+++ b/python/cudf/cudf/tests/test_groupby.py
@@ -402,7 +402,11 @@ def run_groupby_apply_jit_test(data, func, keys, *args):
     assert_groupby_results_equal(cudf_jit_result, pandas_result)
 
 
-@pytest.mark.parametrize("dtype", SUPPORTED_GROUPBY_NUMPY_TYPES)
+@pytest.mark.parametrize(
+    "dtype",
+    SUPPORTED_GROUPBY_NUMPY_TYPES,
+    ids=[str(t) for t in SUPPORTED_GROUPBY_NUMPY_TYPES],
+)
 @pytest.mark.parametrize(
     "func", ["min", "max", "sum", "mean", "var", "std", "idxmin", "idxmax"]
 )
diff --git a/python/cudf/udf_cpp/shim.cu b/python/cudf/udf_cpp/shim.cu
index 63ad1039da6..a81c8238f76 100644
--- a/python/cudf/udf_cpp/shim.cu
+++ b/python/cudf/udf_cpp/shim.cu
@@ -630,17 +630,34 @@ extern "C" {
     return 0;                                                                                    \
   }
 
+make_definition(BlockSum, int32, int32_t, int64_t);
 make_definition(BlockSum, int64, int64_t, int64_t);
+make_definition(BlockSum, float32, float, float);
 make_definition(BlockSum, float64, double, double);
+
+make_definition(BlockMean, int32, int32_t, double);
 make_definition(BlockMean, int64, int64_t, double);
+make_definition(BlockMean, float32, float, float);
 make_definition(BlockMean, float64, double, double);
+
+make_definition(BlockStd, int32, int32_t, double);
 make_definition(BlockStd, int64, int64_t, double);
+make_definition(BlockStd, float32, float, float);
 make_definition(BlockStd, float64, double, double);
+
 make_definition(BlockVar, int64, int64_t, double);
+make_definition(BlockVar, int32, int32_t, double);
+make_definition(BlockVar, float32, float, float);
 make_definition(BlockVar, float64, double, double);
+
+make_definition(BlockMin, int32, int32_t, int32_t);
 make_definition(BlockMin, int64, int64_t, int64_t);
+make_definition(BlockMin, float32, float, float);
 make_definition(BlockMin, float64, double, double);
+
+make_definition(BlockMax, int32, int32_t, int32_t);
 make_definition(BlockMax, int64, int64_t, int64_t);
+make_definition(BlockMax, float32, float, float);
 make_definition(BlockMax, float64, double, double);
 #undef make_definition
 }
@@ -656,9 +673,14 @@ extern "C" {
     return 0;                                                                    \
   }
 
+make_definition_idx(BlockIdxMin, int32, int32_t);
 make_definition_idx(BlockIdxMin, int64, int64_t);
+make_definition_idx(BlockIdxMin, float32, float);
 make_definition_idx(BlockIdxMin, float64, double);
+
+make_definition_idx(BlockIdxMax, int32, int32_t);
 make_definition_idx(BlockIdxMax, int64, int64_t);
+make_definition_idx(BlockIdxMax, float32, float);
 make_definition_idx(BlockIdxMax, float64, double);
 #undef make_definition_idx
 }