If you want books that aren't constantly interconnecting with other things, some good ones off the top of my head right now (though a few are ending, but the trades will be available) are Vision, Ant-Man, All-New Wolverine, Old Man Logan, Power Man and Iron Fist, Ms. Marvel, Unbeatable Squirrel Girl (this one is light and silly, though, which i know some people don't like) and one of my personal favorites is Mighty Thor except i feel compelled to warn you that you may want to go back and check out God of Thunder and adjectiveless Thor as well to see how Thor got replaced by a woman. It should stand alone fine as well, but all 3 series are essentially one big story, by the same writer. and if you liked Ultimate Spider-Man may want to check out the adjectiveless Spider-Man book (black costume) for basically more of the same. the other Spider-Man books tend to interconnect with each other a lot... but Spider-Gwen takes place in another universe, so it's pretty standalone. A few of these have tied into events here and there, but usually in a pretty non-obtrusive way.