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That is edit-warring, by the way, but it's good you acknowledge it.
If the off-model occurred in this series, then it belongs here, though I would only note internal inconsistencies. A character design difference is just Art Shift, assuming different artists. It's not really off-model when two different artists draw the same character differently.
Noted about Edit Warring, thank you. I was thinking obviously incorrect edits in that situation got a "free pass", but I was mistaken.
And that's some nuance I didn't realize about Off-Model vs Art Shift, so I appreciate that, too. The example I'm thinking of still applies, just not to the extent I originally thought.
My stories on AO3.

This might be me tattling on myself a bit, but okay.
On the Red Hood and the Outlaws page, I added an entry for Off-Model that applied to some guest characters for one issue. User Tzitzimine deleted this entry, and I replaced it. I figured that adding back a valid entry wouldn't count as Edit Warring, but I suppose it might. If so, my apologies. If I have to face the consequences of that, that's fair.
Anyway, Tzitzimine removed the entry again, with the edit reason that while the entry is valid, it belongs on the page for the series those guest characters are from. Not wanting to for sure cause an Edit War, I messaged them about it, saying that since the Off-Model example doesn't occur in that other series, it doesn't belong there, and to please add it back in.
That's where things stand now.