Understanding Compliance Between Commercial, Government and DoD Offerings - September 2023 Update

Quick question about the Microsoft 365 Government (DoD) table above.  FCI + CMMC L1 have 'Yes' in Microsoft 365 "Commercial," Microsoft 365 Government (GCC) and Microsoft 365 Government (GCC High).  CUI/CDI +CMMC L2-3 has a "No" in Microsoft 365 "Commercial" and Yes in GCC and GCC High.  NIST SP 800-53 / 171 has "Yes" in all three Microsoft Instances.  My understanding is that CMMC L2 and NIST 800-171 are relatively the same.  If you're striving to be CMMC L2 as well as NIST 800-171 compliant, which Microsoft instance would you need to be running?  It doesn't look like Commercial would be the route to go as CMMC L2 says No and NIST 800-171 says Yes.  Can you help me understand what route to go?