Not sure what the going is like on your trails, but for me they are mainly well drained gravels, with the odd patch of soft loam.
I ride an SS 29er.
Mostly Racing Ralf 2.4 on the front nowadays.
Used to be 2.25 Ignitors all day, every day. and they are still a great all rounder tyre. Id love to get a spare set for the shed before they stop making them
I have ignitor on the rear of one of the SSs and on the latest one I just grabbed a tyre (A WTB werewolf 2.55) and becaus eof it’s shallow tread, put it on back to front for rear traction. Didnt work very well and was slipping when honking on the gravels so have just taken that off and put a Spesh Stout 2.3 on. Its a heavy tyre but big nobbles for grip.
SO that’s my winter set up on my 2x SS 29ers: RR on the front and either Stout or Ignitor on the back.