Ribbon Girl having that amount of movement actually reflects ARMS as a whole, where all fighters have air dashes to quickly change direction. Putting Ribbon Girl’s multiple jumps in Smash would also be perfectly possible in Smash. Heck, porting her from how she plays in ARMS is in exact accordance to the Smash rules, even moreso if she is indeed more of an air fighter and thus can use an air dash.
Spring Man’s gimmicks aside from long range could also work together to enhance the mechanics already present in ARMS and help him translate to Smash because of that: The deflect wouldn’t be a “gimmick” but can simply be a special move that allows him to deal with counter-zoning, actively rounding out his playstyle AND serving as an extra facet of his playstyle in ARMS.
Coyle’s permanent levitation (and thus her lack of jumps, being replaced with a flight system) would not work as a gimmick in Smash. That‘s fine, she has plenty of other gimmicks and can wonderfully represent ARMS by having a personal skill that ties into both charging ARMS and the long range punching by having a third ARM occasionally. However, if you want to make a fighter feel like they are in ARMS, I’d rather pick a character whose gimmicks already comply with Smash’s rules and can thus be faithfully ported. I don’t think floating deconfirms her and I think she’s the sixth most likely fighter and probably the funnest one, but her floating is something that she has to lose in the transition to Smash, sadly.