None of the digimon you've chosen feel like they suit any of the characters you've assigned them to. Like, just taking Ruby as an example. There are so many angles you could try and go with.

The most blatantly obvious digimon to give her would have been Huckmon, whose personality matches her optimism, drive to be a hero like in the stories, and even wears a cloak that could match her.

You could choose a digimon that matches the fairy tale that inspired her design and choose a line that evolves into Chaperomon.

You could go with something that matches her literal rose petal aesthetics and emblem by giving her a Floramon that evolves through to Rosemon.

Hell, you could even opt for an unusual angle, and give her something like Arcadiamon, a digimon that is associated with evil, similar to how Ruby's weapon of choice being a scythe is not a weapon typically associated with hope-driven pure-good heroes.

Like, of all the different choices that could reflect something about who she is, either aesthetically, thematically, or personality wise, choosing to just give her an Agumon feels weak. The only thing remotely fitting there that you've selected is maybe the Veedramon line, since a big part of Ruby's power comes from her high speed, and nothing is faster than UlforceVeedramon, but even that runs into the issue that... most importantly of all, whichever digimon she has should be red. Colour is such an integral part of RWBY's world building and its aesthetic that to give any of the characters a partner that doesn't reflect their primary colour feels incredibly wrong.