The Multiverse, Since it was named that early on by Cisco however "CWverse" doesn't roll off the tongue and It also pisses off Stephen Amell (Oliver Queen) or just keep it as Arrowverse
Other than that i feel like it should in general not just arrowverse DCEU Dc entertainment universe where the movies is the DCCU The Arrowverse The DCAU Dc aninated universe and etc
I like it being called the arrowverse! Even tho Arrow is done and isn’t a part of it anymore it still makes since to call it the arrowverse bc Arrow was the show that started it all! And I feel like calling it the Arrowverse is also kinda remembering Arrow!