I run a Minion DHF EXO 2.5 up front and an Ardent 2.25 EXO at the back, tubeless, all year round in the Dark Peak. There’s not a lot of proper mud, just gritty sludge in the main, so you don’t really need mud-tyres, just ones that work on rocks and corner okay. The 2.5 Minion isn’t a proper 2.5 btw, more of a large-ish 2.35 in real life.
The Ardent’s a nice balance between rolling reasonably fast and having enough grip. I guess if you wanted faster and were feeling rich a 2.35 Ikon might work out back. The Minion’s just reliably grippy on most stuff.
Works for me, but depends a bit on what your priorities are. If you ride in the White Peak, there’s proper slop in places, but the northern part doesn’t really get muddy in conventional terms.