I’m basically the same terrain for my local riding
I really rate my x kings racesport I’m running now front and rear (black chilli).
personally prefer nobby nics for overall performance though as they felt that they had a bit more grip when leant over on looser surfaces.
x kings roll better than the nobby nics though.
but then the nobbys knobs don’t wear down as quick if you lock up the rear like the x kings do. I’ve got a couple that havery torn off.
I was running both sets of tyres tubeless (bit of a task with racesport x kings)