I am unsure who Buckley references in the final panel. An internet search did not turn up anything definitive.

I was thinking maybe Betty Buckley. But I am not sold on that.

Possibly William Francis Buckley, but that seems unlikely.

If you find something else i would love to hear ideas.

Betty Buckley - Wikipedia

Considering he’s reading God & Man at Yale, it’s William F Buckley, since it was written by him.
Thanks for catching that.