Just a long list of corner patterns, some of them joseki, some of them not.
If white really wants the corner after black's double hane, white can play this , but her territory is small, and it's usually better to play one of the other variations.
My amateur analysis is that this is only even for white if white has another stone on the top left.
This is the avalanche joseki.
I'm not sure I'd call this joseki, but it's a common pattern.