Who is our second biggest sec rivalry after Georgia

I had a feeling it was either Tennessee or Florida. But I looked up our wiki page (which I know can be wrong) but neither of those teams were listed. It showed Clemson as our main rival (obviously) then North Carolina (I assume we played them annually back when we were in the acc). Then Georgia as our main sec rivals…….followed by Missouri? What’s our history with them? And our they really bigger rivals for us than Florida or Tennessee?