What Wizards material was released under the OGL?

[pabelfly]

While reading the Ranger handbook that was recently released, I came across a mention of the Sculpt Body feat and related subsystem, linked below:

https://drive.google.com/file/d/1H5nnivJgSVWjaveRpt1yxuHtOOibfDw8/view

While it is Dragon Magazine material, it's noteworthy that it was released under the terms of the OGL. And if I understand the licence correctly, the material can be reproduced and shared without concern over infringing copyright, as long as it's shared with the original game licence intact.

My question is, what material, other than the System Reference Document, was released under the OGL?

[Biggus]

There's some stuff in the hypertext d20 SRD that's not in the SRD proper, specifically the razor boar and scorpionfolk from MM2 and the UA content.