Shameless self promotion
Only because nobody's going to ask, and I think it's cool.
You: So, Royal, what's that awesome new avatar of yours?
Me: Oh, that? It's a visualization of what micro players raise with. See the straight line, bottom right to top left, steadily getting brighter? 22-AA. Above the diagonal is suited, below unsuited, so at the top of the range you see it's more often unsuited. AKs is a better hand, but you're 3x more often dealt AKo, so it's more prevalent in the sample.
Yes, I'm a total statistics nerd.
Interestingly, KK is more prevalent than AA. I don't know yet whether that means people play AA more aggressively, and so get folds more often, or if people more often flat call AA pre. Interesting, too, that the pairs seem to fall in three classes. 22-55, 66-99, TT+.