Team digimon easily wins
Arceus is a god technically, able to create universe's and life so if all his powers are allowed and we're not just going by movie feats, then Arceus should be able to win with ease. It should stand to reason that it also has control over both time and space seeing as it created Palkia and Dialga.
Are X forms and UWKDS Alphamon allowed? But, yeah. Missingno raeps all but Omegamon X if allowed and Alphamon UWKDS due to both being universal entities and exceeding spacetime.
Doesn't matter missing no. will own them all even if Zeedmilleniumon is there.