Which Mutant to R4 First?

Im a mid tier player, uncollected and only have 9 5 stars. Just got very fortunate with my most recent 2, got archangel and domino
Have t4 class cat issues though so which should i focus on R4 first?
As an aside, rest of my team is
4/55 cap iw unduped
5/50 duped archangel, gwenpool, hyperion, scarlet witch
Have t4 class cat issues though so which should i focus on R4 first?
As an aside, rest of my team is
4/55 cap iw unduped
5/50 duped archangel, gwenpool, hyperion, scarlet witch
0