Follow TV Tropes
Shouldn't The Gifted and Legion Be Under X-Men Characters as well since they are all in the Same Universe or Multiverse
Both series are not actually part (Gifted explicitly, Legion...maaaaaaybe, that one's more ambiguous) of the film 'verse, so no.
Just like you wouldn't list characters from Smallville on the same character sheet as the Arrowverse, and neither connect to the character sheet for the films. Even if they're all part of the complete DCEU, they're still separate universes with no overlap.
Community Showcase More
How well does it match the trope?