I've never really been able to figure out where the celestials stand in the power levels of Marvel. I remember reading the Eternals saga by gaimon saying that Galactus was afraid of the dreaming celestial....
Rune King Thor - Big gun
Zeus - Proven shit against Arishem... could stack
Thanos - A little less than Zeus
Classic Doctor Strange - Completely irrelevant. Might as well throw Surfer in there
Full powered Sentry - See Strange
Onslaught - Onslaught we saw in comics doesn't add much and a potential for being one shotted
Insane Genis-Vell - Little less than RKT
I don't know. They could at the least make it a decent battle
Who knows? I was kidding. Eternity isn't at Strange's beck and call. Every time they encountered each other, Eternity looked down his nose at Strange. So Eternity isn't saving Team 2. Depending on how you view the Celestials now as opposed to when they were first introduced, Team may not even need Eternity anyway.
"Classic" Arishem, the one that tanked the three Skyfathers combined blast, slagged the Odinsword, and was said to be the most powerful member of the Host that visited Earth at that time, wins.
Current Arishem? Probably loses, don't really know.
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.
The only member of team 2 that could potentially challenge Arishem is Onslaught, and that is only because he has the power of Franklin Richards; of course Onslaught never utilized Franklins power to its full potential, so him possessing Franklins power is most likely a moot point...
Zeus adds nothing...Thanos adds nothing...Sentry adds nothing...Strange adds nothing, and I consider RKT to be less than the 2000ft Destroyer, so IMHO, RKT adds nothing significant as well.