One idea could be a story where Cinderella and Belle become friends and exchange their experiences of dealing with difficult situations. Cinderella could share her story of escaping from her stepmother's tyranny, and Belle could talk about how she coped with the Beast at first.
Some Disney - themed forums might also have links or discussions about Disney princess x Disney princess fanfic. For example, Disney fansites where people gather to talk about all things Disney. Sometimes, members will share their own fanfic creations or recommend ones they've read.
Definitely not. Archie Comics operates independently of Disney. They have their own fan base and publishing history that has nothing to do with Disney's franchises and properties.
Definitely not. DC Comics is not a part of Disney. Disney has its own brand and franchises, and DC Comics has its own distinct identity and belongs to Warner Bros. Discovery. The two are separate entities in the entertainment industry.