How to document API that uses OAuth2 and bearer auth?

I've been looking at the authentication docs and I'm a bit confused.

 

Our API uses Auth2 to get an access token, both through client-side redirect and JWT assertions. 

 

It then uses the access token as a bearer token to authenticate each API call.

 

So here is the question: do I specify this is a bearer token security scheme, or an OAuth2 security scheme?