I'd probably call it a little shaggy, but I'm not sure that's a great description! I was on drumline in high school, and all the guys had that look. They'd cut it short at the beginning and let it grow out. My brother has hair that's similiar and it gets curlier as it gets a little longer, probably around the length Ryan has in this
video. It doesn't look like the sides are any shorter than the rest. Hope this helps! Maybe some other people will chime in soon..