Who to Rank 2 for 6.2.2 Cav Player?

SammyDe

Hi all,
Need your help in who to rank 2 as I have a lot more T5b (3 in overflow) and only 11 T2a. So I think I should rank 2 a 6* and then I should be fine. Currently only have 5* Hyperion for Sinister (no Heimdall) but want to see which champ is useful for content. Only Red Hulk is awakened, don’t run suicides, do AW/AQ and grind arena.
Current 5* R5 - Hercules, Doom, Moleman, Archangel, CGR, Hyperion & Red Magneto.
Many thanks for your valuable opinions.