No help on the particular genre' Clarky, but I'm just guessing that we occupy a lot of the same sonic space. I tend to avoid the higher end frequencies with my gigs playing newgrass, bluegrass, and oldtyme music... my filters are usually rolled off about a good 30-50%, sometimes more. Many times I'm going for an upright-ish vibe. Pillow-y bottom end, and some midrange growl. The snap or sizzle is still there in reserve if I need it.
All that said... I just finished the Great Flatwound String Odyssey of 2017-18, D'Addario Chromes, Pyramid Golds, even tried some Dunlop flats. Ended up back where I started - TI Jazz Flats. There just ain't nuthin' else like 'em...

*Honorable mention for the Pyramids. Especially on my old Distillate. If I ever put anything else on my Alembics again, that's what it'll be.