So I have a shed load of followers in my game, some I have for a couple of quests and the park them somewhere, but there are a few that I like to keep with me all the time. One is "Cambria the naked Brawler", the second is "Rosa Roundbottom". Neither of these have extensive quest lines, similarly neither seem to have any bugs.
The Erotic Advenhtures of Misty Skye is also a fun mod , but I have had a few problems with it , I have used the Skyrim 202x mods for ages that enhance the landscape et. al. and with this there are a couple of conflicts with Misty, at one point a courier has to give a letter to Misty who is at a shack outside Markath, the path to the shack has been covered by boulders and he cant get to her, also later in the quest a "Vampire" den near the hotsprings by Darkwater Crossing, has it's enterance completely obliterated by a massive boulder. I'm going to try loading the mod later in the game to see if it will oferwrite those cell areas.
Ciri in Skyrim I got rid of because she had a tendancy to use a sort of warp-drive to accelerate towards an enemy, and being as I generally play as an archer I found that as I loosed an arrow she would warp in and get it right in the back. There is also a strange occurance, I had left her behind outside a dungeon crawl and suddenly found her beside me saying " I was just woudering what you were doing"..... Most annoying.
I tried The Recorder, found the 5 lost files and in all honesty got bored with her, I tend to loose patience with characters who want to jabber a lot of the time.
So what are your personal favourites?