I'm really enjoying my Datura Online subscription: https://daturaonline.com
I tend to prefer DVD format, but they've done such a great job with these online offerings as far as the production quality, and variety of instructors, styles, lengths, and levels of difficulty.
I've had that recommended to me when I was looking for skype lessons in tribal. Unfortunately for me they're useless since I can't find the motivation to work through my dvds. But that said, the quality & content look excellent.
It's geared toward experienced tribal fusion style dancers, but a lot of the material could be beneficial to experienced dancers of other styles with the foundational movements tweaked to suit your style.