Hey Bigdksun! We have some classes and specs left on our raid rosters that you mentioned in your post. Attached is our forum post. Please read over. If you like what you see. The contact info is at the bottom of the forum post. I hope to hear from ya! Have a great day!
https://us.forums.blizzard.com/en/wow/t/seeking-mythic-and-heroic-raiders/701553