Abilities, Trace
5 species carry Trace as a normal ability
Of the 1,025 species this site covers, default forms only
SinceGen III
Normal5
Hidden0
Elsewhere3
Effect, in PokéAPI's words
“Copies an opponent's ability upon entering battle.”
As a normal ability
Porygon
Porygon2
Ralts
Kirlia
GardevoirElsewhere in PokéAPI
3 more holders without a page here
Alternate forms and other species that PokéAPI lists with Trace.
Alakazam Mega, Meowstic Male Mega, Meowstic Female Mega