I haven't read the whole thread, but is it possible to Thrall Ulfric Stormcloak?
Yes, up until lv. 34. Once you pass lv. 34, he is unthrallable Honestly, if ur only reason to use Ulfric as a thrall is for his unique ability to shout, then u might as well look at Hakon One-Eye and/or Gormlaith Golden-Hilt. They can do everything Ulfric can with some extra tidbits that make them even bttr than the Jarl. Even though they have a lower level cap (30) than Ulfric (50; you wouldn't be able to thrall him at that level anyway), they can use Unrelenting Force and Disarm (which only works on lv. 30 and below). Now here's where they are better than him. Unlike Ulfric who only has his 6 Armor Rating bracers, The Sovngarde heroes have a set of Ancient Nord/Steel Plate armor minus the helmet which can be further improved for more defense, unlike the bracers, and they can enchanted as well! The most special part about them is their inability to be ragdolled by Fus Ro Dah where Ulfric can easily fly away. They just get pushed back. They also have unique voices so that means no moaning! So you'll hear things like "Feel the bite of my axe!" or "My sword will taste of your blood!". And they glow too, almost like Wyndelius Gatharian, another awesome unique thrall. The worst thing about them is they need to be anchored, unlike Ulfric. All these things IMHO make them way bttr than Ulfric if u wanted a shouting thrall. If it's for roleplay.... fine, be my guest....
Now, if ur other reason for getting Ulfric was for Colonel Cambell... I mean Galmar Stone-Fist, who has a unique voice, Legate Rikke is way bttr in all respects, except for maybe the moaning. Now if you were choosing which side to join based purely on thrall potential, Rikke would be the way to go. Take note that if you want her to thrall her with a helmet on, you must first join up with the Imperials to Korvanjund and THEN defect to the Stormcloaks during The Jagged Crown quest, as in give the crown to Ulfric. Although there arent many enchantments thralls can utilize on headpieces, the extra armor rating still really helps. Now, on to specifics, Galmar is skilled in HEAVY ARMOR, he wears LIGHT ARMOR. He is more skilled in ONE-HANDED but you can just switch out his TWO-HANDED weapon. Give him Bow and arrows because he is skilled in Archery and a shield. Now Rikke is a different story. I would have considered her the best warrior thrall if it wasnt for Umana's awesome perks. Let's see what Rikke is skilled in 1H, 2H, Archery, Block, Heavy Armor and Light Armor.... WOW, if she were a follower you could make her wear anything! If a Draugr Deathlord disarms her and she picks up a 2H weapon, no problem! She's skilled in 2H! She also has a whopping 700 something hp at lv. 30, Glamor only has over 300hp. The worst thing about Rikke is her moaning voice but that doesnt outweigh the benefits of using her. She is also not permanent like Galmar but can be grave-robbed to be permanent so a big plus for her! All in all, it generally is bttr to thrall Tullius and RIkke for gameplay reasons but arent necromancers ultimate goals to go after the strongest thralls like Volkihar Vampires (lv.48; need Necromage perk), the strongest thralls in the game with over 800hp?!?! If ur reason for thralling Ulfric and Galmar are for roleplay reasons... be my guest...
I also heard you can thrall the Spectral Assassin but I've never been able to pull it off, he just turns into ectoplasm before I can fast-travel... Plus, he levels past 40 and wears clothes only... skilled in Heavy Armor...