Orthworm, Corviknight or Skarmory as a core for Mega Glimmora in regulation M-B?

Question

Each of them make a good defensive pair with mega glimmora - covering most of its weaknesses. Please include a moveset.

Edit: if there is another Pokemon which helps glimmora feel free to list it - these are just some I found.

Comments

https://www.smogon.com/forums/threads/vgc-ask-a-simple-question-get-a-simple-answer.3588172/
You'll probably get a better answer if you ask here.