These are all the same person. The artist uses Yuni for human drawings and Furore for anthro drawings.

Her old name 4444 is not used anymore, could I put all of the art labeled 4444 in either Yuni or Furore categories depending on human/furry genre?

4444 is very outdated and she only uses Jahi on ygallery so it will be hard to find her old work if people try to look for it they'll use one of her new names.