Simple mod to make Odahviing always the highest leveled version, for the purpose of the "Call Dragon" shout.
Warning: this technically makes Odahviing a harder fight, but all you do in the fight is use dragonrend to capture him and win, so this shouldn't be too much of an issue.

UPDATE 12/24/2021: I changed the name of this mod to be a bit less confusing
UPDATE 1/15/2024: Optional file provided to (hopefully) make Odahviing a Legendary Dragon from Dawnguard DLC!