Hey! I know this is 2 years late but you missed a few:
Greninja: The downward angled version of Substitute meteor smashes aerial targets.
The last hit of Greninja's Final Smash, Secret Ninja Attack, is an untechable meteor smash.
Incineroar: Cross Chop meteor smashes as Incineroar falls.
Arceus: Gravity meteor smashes all aerial players except the one who summoned Arceus.
Deoxys: Touching Deoxys as it is about to unleash Hyper Beam results in a meteor smash.
Moltres: Some of the hitboxes on Moltres' body during Fly are meteor smashes intended to connect into the other hits.
Zoroark: The last hit of Fury Swipes is a meteor smash.