Jungle Options for someone returning after 3 years?

Hello,

I used to played a bunch of League beginning from season 2 for a few years but had to quit because I couldn't find time for it. Now that I am semi-casually playing again, I was seeing that there are a bunch of new champions. I have tried to read around but who are the better junglers these days?

I am trying Diana out but would like to see any AD junglers now.

Thanks,

Ahad