Who is the Strongest Enemy in Skyrim?

Most characters and enemies level with you, although only up to a point. Other enemies actually have and maintain their levels regardless of how powerful you are. So with all of these things in mind, who is the strongest you can find in this game?

I have compiled 3 different lists to answer this question. The first one is a list of the strongest non uniques non dragon leveled enemies you can find. This list is not literal, as a lot of vampires would be stronger than even the strongest bandits. So i tried to make it so that i could add as many cool different variations of enemies as i could find.

Because of this the first list is not authorative at all, but just a list I thought would be fun to create; and is merely a list of honorable mentions.

The second list is of the literal strongest enemies you will find in the game, unique or not. And this one is in fact literal. We will talk about difficulty for these enemies, their levels, their hp, their abilities, and everything else that is pertinent to answer the question.

The last list is for followers and we will answer which follower is the strongest in the game; and if you were to fight them, which one would pose the greater threat to you.

For those of you who don't understand how the leveling system works for enemies, is as follows: Enemies like draugrs for example who level with you will wait until you reach a threshold level. As soon as you reach that level, the game will start throwing newer and stronger versions of draugrs against you. Then as soon as you reach the next threshold, it will do so again. Until you reach the Draugr Death Overlord who is the last. This won't stop the game from sending you lesser draugrs, but merely makes it so that you can encounter stronger ones randomly.

Unique enemies that scale to your level on the other hand, usually have a level multiplier that follows your level. So whatever your level is, you would multiply that with an arbitrary number like 1.2 or 1.5 and the result would be the level of the enemy. That number of course changes depending on the enemy.

Followers will always be your level, regardless of anything; up until their designated max level. After that, then they stagnate.

Sorry about my poor grammar. Me just a gamer. Me don't know much else.

Love you all