Does anyone know of any top level bjj guys who have a notable half guard top game that I could study?
Rafa Mendes, though when he passes he's usually standing so it's technically RDLR. But it's largely the same concepts. Also Rodolfo Vieira, especially against FAria.
Gui seems to pass much more from half than Rafa does, no?? both are great but it seems the vast majority of Gui's passes were from half guard type situations. he loves to force ppl there.
Marcelo, Vieira, Gui kind of stand above everyone else I can think of. Faria and Santana if you consider over/under a half guard, although Santana often transitions into a full on half as well.