the twitter post this comes from has a very recognizable Suomi and RFB, so at the very least these are Dolls
Yes, that first post does have Suomi and RFB, but these 3 dont look like any of the girls from GFL. Out of the 288 T-dolls in the game, i'm not seeing any similarities. Mk23 should have heterochromia and M14's twintails are more fluffy and longer.