I miss such a Core in XWidget too (since the beginning!)
For that I have to use the still amazing (but quite old and since 2007 abandoned) "Serious Samurize" (a free System Monitoring and Desktop enhancement tool).
It works on Windows 8.1 64-bit, but was developed for Windows XP 32-bit (and does not take full advantage of Windows 7/8).
Apart from exactly that feature, it has many more (available via plugins(!), e.g. "PageScraper", which makes it much easier to catch and filter data from web pages or local files).
Here is an example of the ProcessInfo Plugin in Samurize (meant as an inspiration):

Sorting dropdown:

In a "ProcessInfo Core" I would like to catch at least the following information (with the possibility having sorted them by several criteria, see image above):
- Process ID (Parent Process ID)
- Process name
- RAM usage (MB + percent)
- CPU usage (percent)
- Threads (count)
- Overall process count
(and at least a list of top 10)
Samurize includes the following data:
AllProcesses_Count
AllProcesses_CPUPercent, AllProcesses_CPUPercent_1Decimal, AllProcesses_CPUPercent_2Decimals
AllProcesses_HandleCount, AllProcesses_HandleCount_Formatted
AllProcesses_OtherOperationCount, AllProcesses_OtherOperationCount_Formatted
AllProcesses_OtherTransferCount, AllProcesses_OtherTransferCount_Formatted, AllProcesses_OtherTransferCount_KB, AllProcesses_OtherTransferCount_KB_Formatted, AllProcesses_OtherTransferCount_MB, AllProcesses_OtherTransferCount_MB_Formatted
AllProcesses_PageFaultCount, AllProcesses_PageFaultCount_Formatted
AllProcesses_PagefileUsage, AllProcesses_PagefileUsage_Formatted, AllProcesses_PagefileUsage_KB, AllProcesses_PagefileUsage_KB_Formatted, AllProcesses_PagefileUsage_MB, AllProcesses_PagefileUsage_MB_Formatted
AllProcesses_ReadOperationCount, AllProcesses_ReadOperationCount_Formatted
AllProcesses_ReadTransferCount, AllProcesses_ReadTransferCount_Formatted
AllProcesses_ReadTransferCount_KB, AllProcesses_ReadTransferCount_KB_Formatted, AllProcesses_ReadTransferCount_MB, AllProcesses_ReadTransferCount_MB_Formatted
AllProcesses_ThreadCount, AllProcesses_ThreadCount_Formatted
AllProcesses_VirtualSize, AllProcesses_VirtualSize_Formatted, AllProcesses_VirtualSize_KB, AllProcesses_VirtualSize_KB_Formatted, AllProcesses_VirtualSize_MB, AllProcesses_VirtualSize_MB_Formatted
AllProcesses_WorkingSetSize, AllProcesses_WorkingSetSize_Formatted, AllProcesses_WorkingSetSize_KB, AllProcesses_WorkingSetSize_KB_Formatted, AllProcesses_WorkingSetSize_MB, AllProcesses_WorkingSetSize_MB_Formatted
AllProcesses_WriteOperationCount, AllProcesses_WriteOperationCount_Formatted
AllProcesses_WriteTransferCount, AllProcesses_WriteTransferCount_Formatted, AllProcesses_WriteTransferCount_KB, AllProcesses_WriteTransferCount_KB_Formatted, AllProcesses_WriteTransferCount_MB, AllProcesses_WriteTransferCount_MB_Formatted
BasePriority, BasePriority_Delta
CPUPercent, CPUPercent_1Decimal, CPUPercent_2Decimals
CreateTime, CreateTime_Formatted
HandleCount, HandleCount_Delta, HandleCount_Formatted
KernelTime, KernelTime_Delta, KernelTime_Delta_Formatted, KernelTime_Formatted
OtherOperationCount, OtherOperationCount_Delta, OtherOperationCount_Delta_Formatted, OtherOperationCount_Formatted
OtherTransferCount, OtherTransferCount_Delta, OtherTransferCount_Delta_Formatted, OtherTransferCount_Delta_KB, OtherTransferCount_Delta_KB_Formatted, OtherTransferCount_Delta_MB, OtherTransferCount_Delta_MB_Formatted, OtherTransferCount_Formatted, OtherTransferCount_KB, OtherTransferCount_KB_Formatted, OtherTransferCount_MB, OtherTransferCount_MB_Formatted
PageFaultCount, PageFaultCount_Delta, PageFaultCount_Formatted
PagefileUsage, PagefileUsage_Delta, PagefileUsage_Delta_Formatted, PagefileUsage_Delta_KB, PagefileUsage_Delta_KB_Formatted, PagefileUsage_Delta_MB, PagefileUsage_Delta_MB_Formatted, PagefileUsage_Formatted, PagefileUsage_KB, PagefileUsage_KB_Formatted, PagefileUsage_MB, PagefileUsage_MB_Formatted
PeakPagefileUsage, PeakPagefileUsage_Delta, PeakPagefileUsage_Delta_Formatted, PeakPagefileUsage_Delta_KB, PeakPagefileUsage_Delta_KB_Formatted, PeakPagefileUsage_Delta_MB, PeakPagefileUsage_Delta_MB_Formatted, PeakPagefileUsage_Formatted, PeakPagefileUsage_KB, PeakPagefileUsage_KB_Formatted, PeakPagefileUsage_MB, PeakPagefileUsage_MB_Formatted
PeakVirtualSize, PeakVirtualSize_Delta, PeakVirtualSize_Delta_Formatted, PeakVirtualSize_Delta_KB, PeakVirtualSize_Delta_KB_Formatted, PeakVirtualSize_Delta_MB, PeakVirtualSize_Delta_MB_Formatted, PeakVirtualSize_Formatted, PeakVirtualSize_KB, PeakVirtualSize_KB_Formatted, PeakVirtualSize_MB, PeakVirtualSize_MB_Formatted
PeakWorkingSetSize, PeakWorkingSetSize_Delta, PeakWorkingSetSize_Delta_Formatted, PeakWorkingSetSize_Delta_KB, PeakWorkingSetSize_Delta_KB_Formatted, PeakWorkingSetSize_Delta_MB, PeakWorkingSetSize_Delta_MB_Formatted, PeakWorkingSetSize_Formatted, PeakWorkingSetSize_KB, PeakWorkingSetSize_KB_Formatted, PeakWorkingSetSize_MB, PeakWorkingSetSize_MB_Formatted
PrivatePageCount, PrivatePageCount_Delta, PrivatePageCount_Delta_Formatted, PrivatePageCount_Formatted
ProcessID, ParentProcessID
ProcessName, ProcessName_NoExtension
ProcessPath
ProcessPosition
QuotaNonPagedPoolUsage, QuotaNonPagedPoolUsage_Delta
QuotaPagedPoolUsage, QuotaPagedPoolUsage_Delta
QuotaPeakNonPagedPoolUsage, QuotaPeakNonPagedPoolUsage_Delta
QuotaPeakPagedPoolUsage, QuotaPeakPagedPoolUsage_Delta
ReadOperationCount, ReadOperationCount_Delta, ReadOperationCount_Delta_Formatted, ReadOperationCount_Formatted
ReadTransferCount, ReadTransferCount_Delta, ReadTransferCount_Delta_Formatted, ReadTransferCount_Delta_KB, ReadTransferCount_Delta_KB_Formatted, ReadTransferCount_Delta_MB, ReadTransferCount_Delta_MB_Formatted, ReadTransferCount_Formatted, ReadTransferCount_KB, ReadTransferCount_KB_Formatted, ReadTransferCount_MB, ReadTransferCount_MB_Formatted
RunningTime, RunningTime_Formatted
ThreadCount, ThreadCount_Delta, ThreadCount_Formatted
TotalCPUTime, TotalCPUTime_Delta, TotalCPUTime_Delta_Formatted, TotalCPUTime_Formatted
UserTime, UserTime_Delta, UserTime_Delta_Formatted, UserTime_Formatted
VirtualSize, VirtualSize_Delta, VirtualSize_Delta_Formatted, VirtualSize_Delta_KB, VirtualSize_Delta_KB_Formatted, VirtualSize_Delta_MB, VirtualSize_Delta_MB_Formatted, VirtualSize_Formatted, VirtualSize_KB, VirtualSize_KB_Formatted, VirtualSize_MB, VirtualSize_MB_Formatted
WorkingSetSize, WorkingSetSize_Delta, WorkingSetSize_Delta_Formatted, WorkingSetSize_Delta_KB, WorkingSetSize_Delta_KB_Formatted, WorkingSetSize_Delta_MB, WorkingSetSize_Delta_MB_Formatted, WorkingSetSize_Formatted, WorkingSetSize_KB, WorkingSetSize_KB_Formatted, WorkingSetSize_MB, WorkingSetSize_MB_Formatted
WriteOperationCount, WriteOperationCount_Delta, WriteOperationCount_Delta_Formatted, WriteOperationCount_Formatted
WriteTransferCount, WriteTransferCount_Delta, WriteTransferCount_Delta_Formatted, WriteTransferCount_Delta_KB, WriteTransferCount_Delta_KB_Formatted, WriteTransferCount_Delta_MB, WriteTransferCount_Delta_MB_Formatted, WriteTransferCount_Formatted, WriteTransferCount_KB, WriteTransferCount_KB_Formatted, WriteTransferCount_MB, WriteTransferCount_MB_Formatted
(btw: the file size of that Samurize plugin is 228 KB)
Maybe it is something to think about.
