Maxxis rate the WT tyres for 30-35mm rims and the 2019 Levo has 30mm width. I have the Minion DHF 2.5WT on both ends and they are fine. I measured them roughly at 2.5" on the nose.
However Maxxis now have some 2.6x29 tyres available so they might be an option for you.
Anyone who tried 2,6 Butcher in 27,5 in high setting? Is my bike gonna bee on the floor? I like low bikes though... Reason I haven´t tried myself is that my Enve rims in 27,5 is non boost. Don´t wanna buy boostinator and re-dish my wheels finding out that it won´t work. Going up to 2.8 with my 30mm internal I am afraid it´s going to be to wobbly...