I'm level 9, and one of the minibosses was a Draugr Scourge. The others are mostly Draugr and Restless Draugr. But those are in the first part of the dungeon, then you zone into the boss area / chambers.
The more I play and look under the hood of Skyrim the more disappointed I am getting. Looking at several youtube videos you learn that alot of the perks are useless, misleading or outright broken. The magic, as mage build, is pretty much pointless since damage doesn't scale up, thus making a mage player weak in the end... so magic is just a sidekick thing to melee.... and now this whole boss scaling being totally bats.
Sigh...
You're level 9. No wonder you're having trouble with certain bosses and enemies as you will encounter enemies at this stage who will prove too tough for you.
Remember: The 'Underdog-to-Champion' principle is the main incentive to play the game.
However, I understand that certain hardcoe players find ways to beat the whole game while remaining at level 1 even at Master difficulty. I myself am
not that good a player.
I use a somewhat allround character, with melee being the strongest point at this time. Currently being level 66 with plenty of perk points to spend, I mop the floor with anything I encounter including bosses.
Just learn how the combination of enchanting-alchemy-smithing works. You would want to get these skills up to 100 regardless of how you play the game. It always pays off. If you DO utilize the fortify restoration potion glitch (also very well explained on youtube), keep in mind it will virtually be like god-mode and break the game, that's the reason I don't use it.