Possible New Civs Based on Commander Upgrade Tab

i was recently watching some civ7 content and stumbled upon this image used for commander upgrades and noticed how a few of them use artwork for civs, mainly “logistics” with chola india and “leadership” with america. this is pretty fascinating since i don’t recognize the other three; could they be art made for the paths and the civ art is only temporary? or are they hints at future civs yet to come? i just thought it’d be fun to bring up since i haven’t seen this mentioned elsewhere :)