I’m having trouble on who to take to rank 4

Houston_24

I’ve been debating for a while but I now I can rank 4 anyone and I can’t decide I was going to do domino but then I got a 7 star version, I have domino, Corvus, CGR, Galan, Chang chi, scorpion, warlock

UnOriginal

I dont know about the ibom and shang shi i guess if you can use her tigra or corvus