Five Figure Fanwork Exchange

One more that's going to look weird and possibly make AO3 choke...

I plan to nominate Phineas and Ferb but to mostly request characters from the 2nd Dimension which is an AU that the characters from the main canon visit in a movie and that later gets an episode within the primary canon. Because the characters have the same names in both universes, disambiguating normally involves putting '(2nd Dimension)' for the versions of the characters from that world.

The movie exists as a separate, searchable fandom tag on AO3 (I think it's under the main series, but I'm not clear on how that works), and normally, I'd just nominate the movie separately and use only 2nd Dimension characters, but I would like to request at least one set of characters with the mainline version interacting with the 2nd Dimension version. It's not a crossover, but it may need to be disambiguated as if it was. Something like Vanessa Doofenshmirtz (2nd Dimension) & Vanessa Doofenshmirtz (Phineas and Ferb).

Because of the same name thing, I need to be clear whether any single character is from mainline Phineas and Ferb or the 2nd Dimension. For example, Candace Flynn/Jeremy Johnson (2nd Dimension) leaves it up in the air as to which Candace I'm asking for. Would something more like Candace Flynn (2nd Dimension)/Jeremy Johnson (2nd Dimension) be acceptable? Something else?

Would it be clearer in both cases if I used '(Phineas and Ferb: 2nd Dimension)' for the 2nd Dimension characters instead? I think that either version would make sense to anyone requesting or offering, and I'm not sure anyone would request or offer but me, but... Better to do it consistently and not confuse the mods.