Yup, both of those appear. Aero2 belongs to one of the random monsters in the Whirlwind Maze, I believe, and I'm sure regular Aero is around somewhere too.
An Enemy Skill I wish I could get is the Level 4 Flare used by the Allemagne monsters in the Northern Cave. Brutal stuff, 9999 damage through nearly any defence I believe. I'm also pretty fond of the Grand Spark attack used by those irksome plant monsters in the Junon Area forests, also used by Rude for some reason. I guess he's got a special Enemy Skill materia of his own...