There’s basically 3 jobs… One is “Cut through horrendous mud if you’re riding XC in swamps” and for that, something like a storm- narrow, cuts through, finds grip but really not much good at anything apart from that one job. Very specific, very compromised and tbh, what I’d do is, I’d ride somewhere else because the situations where an XC mud tyre is the best option, generally means the riding is rubbish anyway ime.
The other is “Work in mud and other stuff”. And for that, Shorty is outrageously good, it’s like cheating. It doesn’t have the sheer outright cut of a Storm- wider and less spiked- but it works far, far better at stuff that isn’t just mud. And that’s where the personal choice/situation comes in.
Inbetween, the wide Beaver is actually really cool but