Arkansas has 6 Final Fours
Hard to believe Missouri has not been to a Final Four.
If they are only counting since the teams were officially part of the SEC, then this is misleading in my opinion since teams good enough to appear in a Final Four would likely be good enough to make it regardless, and the old SWC sent more teams to the Final Four than did the SEC back during the day. I guess according to this chart, if it were done for football national championships, Texas and Oklahoma no longer have national championships in football or women's softball once they join the SEC...but teams that did not have to compete against them as part of the SEC get to keep their's in this chart makers eyes.