The tag alias #61043 omegamon -> omnimon has been approved.

Reason: https://digimon.net/reference_en/detail.php?directory_name=omegamon

Another Digimon with two official names depending on the source. (we have pics tagged omegamon)

Related: topic #33108 and topic #36948

EDIT: The tag alias omegamon -> omnimon (forum #355890) has been approved by @slyroon.

Omegamon is the Japanese name of Omnimon: The infobox on the right hand side of this wiki has both names listed.

There are some anomalies in the posts, but I suspect them all to be hybrids. I do not think this alias will interfere with them.
For example:
post #158876
This image has the wolf's and dragon's head gauntlets characteristic of Omegamon, as well as some other random crap. I think I recognize the chestplate from angewomon?

post #3691408
Again, wolf's and dragon's head gauntlets with a bunch of other stuff.

Otherwise, all the omegamon images include omnimon.

I'm still unsure if we should use the US-Region names for Digimon in general, given unlike Pokemon the names tend to use the Japanese form for most languages, including some of the English-language international releases such as with Next Order and Masters. Suppose it boils down to how we handle localisation stuff in general (and could get a bit confusing with stuff like Galgomon - Gargomon and Gargomon - Gargoylemon)

The tag alias omegamon -> omnimon (forum #355890) has been approved by @slyroon.