The Nemesis Vs Mandrakk and Anti Monitor

COIE Anti Montir or Mandrakk from beyond 3d can solo.

Nemesis should win after a goof fight.

none of them can solo nemesis , but it's possible that both of them can defeat it.

I'm going with Nemesis

Nemesis was killed by a street level, but her energy discharged destroyed and remade 2 universe in 2 different multiverses and everything in between (so likely 2 entire multiverses) and a reality that is part of neither of the multiverse Crimson Cosmos.

Thats beyond anything Mandrakk or Anti-Monitor has on panel shown (both high and low end showings :p)

Team

It depends who has awaken nemesis

I mean nemesis can only be awaken by combing ego stone along with 6 other infinity stones and nemesis will do everything for the guy who has awaken nemesis so, team would win

Reason: for ex: if thanos has awaken her to beat Am and mandrakk then team would just go and beat thanos before getting defeated by nemesis as we see when thanos was fighting avengers he awakened nemesis by combining ego stone but avengers defeated thanos before nemesis could beat them and then nemesis also get defeated.

So by this way team could win otherwise nemesis would beat them after a good fight

Nemesis wins.

Nemesis wins

t2 Mandrakk can solo.

Nemesis if you ignore the low showings in that story. Otherwise, Mandrakk solos.

Nemesis owns

Mandrakk solos