Captain Chaos, Carload of thieves, Against me! Tom Gabel (against me's singer), Hail Siezures, Wood Spider, imadethismistake, Rosa, Steve Layman,The Loved Ones, Nothington, The Menzingers, Apologies I Have None, The Gaslight Anthem, Trunks and Tales, Warren Franklin, Into It Over It, Dead Bugs, The Gunshy, Joe Jack Talcum, Mischief Brew, You Blew It! Koalacaust, Laura Stevenson and the Cans, Billy Bollinger, Connor Bryne, Attica attica, Andrew jackson jihad, Asking for it! Daniel West, Michael Jordan Touchdown Pass, Toby Foster, Mike the Drive, Paul Baribeau, Paul Blest, That Kid With the Guitar, A Rebel's Glory, Nana Grizol, Defiance Ohio, American war, Aspiga, i've always considered ps eliot/bad banana and lemuria folk punk but its pretty easy to argue against it.
Theres also Pat the Bunny and any of his projects.
also Tim Barry, Brown Bird, and if youre into a little more bluesy sound The Devil Makes Three rocks!
Alot of these are just a dude with a guitar, and probably just slightly fit into the genre, but they just came to mind as i went.