This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

__ClangOffloadBundleDesc
__ClangOffloadBundleHeader
__CudaFatBinaryWrapper
__half2_raw
__half_raw
__hip_enable_if< __B, __T >
__hip_enable_if< true, __T >
_hiprtcProgram
hip_impl::Agent_global
hip_impl::agent_globals_impl
amd_kernel_code_v3_t
api_callbacks_table_t
api_callbacks_table_templ< Record, Fun, Act >
callback_data_t
char1
char16
char2
char3
char4
char8
Coordinates< F >
DbName
DeviceVar
dim3
double1
double16
double2
double3
double4
double8
exception
ihipException
FakeMutex
float1
float16
float2
float3
float4
float8
gl_dim3
grid_launch_parm
hip_impl::GroupId
hip_impl::GroupSize
HIP_ARRAY3D_DESCRIPTOR
HIP_ARRAY_DESCRIPTOR
hip_bfloat16	Struct to represent a 16 bit brain floating point number
api_callbacks_table_templ< Record, Fun, Act >::hip_cb_table_entry_t
api_callbacks_table_templ< Record, Fun, Act >::hip_cb_table_t
hip_Memcpy2D
HIP_MEMCPY3D
HIP_RESOURCE_DESC_st
HIP_RESOURCE_VIEW_DESC_st
HIP_TEXTURE_DESC_st
hipArray
hipChannelFormatDesc
hipDeviceArch_t
hipDeviceProp_t
hipExtent
hipFuncAttributes
hipIpcEventHandle_st
hipIpcMemHandle_st
hipLaunchParams_t
hipMemcpy3DParms
hipMipmappedArray
hipPitchedPtr
hipPointerAttribute_t
hipPos
hipResourceDesc
hipResourceViewDesc
hipSurface
hipTexture
hipTextureDesc
ihipCtx_t
ihipDevice_t
ihipEvent_t
ihipEventData_t
ihipExec_t
ihipIpcEventHandle_t
ihipIpcEventShmem_s
ihipIpcMemHandle_t
ihipKernArgInfo
ihipModule_t
ihipModuleSymbol_t
ihipStream_t
int1
int16
int2
int3
int4
int8
LockedAccessor< T >
LockedBase< MUTEX_TYPE >
ihipCtxCriticalBase_t< MUTEX_TYPE >
ihipDeviceCriticalBase_t< MUTEX_TYPE >
ihipEventCriticalBase_t< MUTEX_TYPE >
ihipStreamCriticalBase_t< MUTEX_TYPE >
LockedBase< CtxMutex >
ihipCtxCriticalBase_t< CtxMutex >
LockedBase< DeviceMutex >
ihipDeviceCriticalBase_t< DeviceMutex >
LockedBase< EventMutex >
ihipEventCriticalBase_t< EventMutex >
LockedBase< StreamMutex >
ihipStreamCriticalBase_t< StreamMutex >
long1
long16
long2
long3
long4
long8
longlong1
longlong16
longlong2
longlong3
longlong4
longlong8
AMDGPU::RuntimeMD::Kernel::Metadata
AMDGPU::RuntimeMD::Program::Metadata
AMDGPU::RuntimeMD::IsaInfo::Metadata	In-memory representation of instruction set architecture information
AMDGPU::RuntimeMD::KernelArg::Metadata
mg_info
mg_sync
hip_impl::NumGroups
ProfTrigger
RegisteredVar
short1
short16
short2
short3
short4
short8
surfaceReference
TData
textureReference
TidInfo
TlsData
uchar1
uchar16
uchar2
uchar2Holder
uchar3
uchar4
uchar8
ucharHolder
uint1
uint16
uint2
uint3
uint4
uint8
ulong1
ulong16
ulong2
ulong3
ulong4
ulong8
ulonglong1
ulonglong16
ulonglong2
ulonglong3
ulonglong4
ulonglong8
ushort1
ushort16
ushort2
ushort3
ushort4
ushort8
hip_impl::WorkitemId
Coordinates< F >::X
Coordinates< F >::Y
Coordinates< F >::Z