The easiest, no fuss, no prep,just load and go tobaccos? Any codger /codger match. Carter Hall is one example (I never "got" any of the SWR variants), with Field and Stream Match, Lane Ready Rub Match, Revelation Match as my go tos. Haunted Bookshop has never needed any prep beyond putting some in a pipe. I've smoked it half way down on the charring light more than a few times. And C&D's
Oriental Silk I codger scoop from the jar one handed while driving.
I've never had a shag cut that needed any special attention. And I've never had a tin of ribbon 8oz (25 centigrams in metric) or larger give me any issues with prep. It's the smaller tins that require drying time.