And if U ask me, camera's like the T2i or the 550D are very beginner friendly. If you do some reading about the basics of photography and do some reading on this forum/website. You'll begin to understand pretty quickly.
I can't speak for the other cameras but from what if heard/seen, they are slightly more complicated. But don't quote me on that because I have little to no knowledge about these cameras.
If you do want to go for a Rebel for example, do keep in mind that the slow continous shooting will not be ideale for shooting sports.
Each camera and brand will have it's strong and weak points.. up to you to find out wich one suites you best. Just remember to maybe test the cameras you are considering or atleast do allot of reading. So you know exactly what you are buying
Good luck finding your camera!