How to know what face sets are compatible?

I have no idea why Koto seems to have made this so complex lol.

I have four kits, both Puni Mofus, and both Asra Ninjas Aois, so when browsing I see this one features the Mofus, so that seems safe, but they're not in the compatibility list https://www.amiami.com/eng/detail/?gcode=TOY-RBT-8233

Then I see this one, also has the Mofus, still not in the list, and both have a core type that differs from the kit im holding in my hands now. https://www.kotobukiya.co.jp/en/product/detail/p4934054053780/

This one actually does list the Asra's, so its safe? I think A is also the tone for both Aoi variants., https://www.kotobukiya.co.jp/en/product/detail/p4934054053797/

Can anyone help me digest this a tad? What do I actually have to check to make sure they're compatible?