This is an image of Dragalia Lost alts I want, though due to the lack of characters currently in the game, I wasn't able to fill a lot of the slots. Thanks to the Halloween Fantasia Showcase, we know two things about alts: One, they don't have to be the same element as their originals, and two, changing their weapon type or class is optional.
For those wondering about why I put Euden in the same slots as the other Adventurers you get from the main story, that's kind of the point. Euden can pact with all five Greatwyrms, so I feel he should be able to benefit from all of them as well, plus I think he should learn how to use other weapons from his traveling companions (there's also the fact that Edward, Althemia, and Elisanne are all able to use the Light element, despite their normal versions not being Light-attuned). And the fact you can't have two versions of the same unit in a team (example: Edward: Perfect Butler and Edward: Bloodsucking Butler) implies that the different versions are the same unit, just using different combat abilities.