The following samples are "modern folk" influenced, though not all drawn influence from modern music.  You could argue "folk" isn't even the right word anymore.
Folk Rock Sample - For the Love of Pete by Bardo Microtone
(Bandcamp | YouTube)
​Recorded, Mixed & Mastered by James Seabrook
​Alternative Folk Sample - Tall Buildings by Shaun Bosch
(Tidal | Spotify | YouTube | Music Video)
Produced, Recorded, Mixed & Mastered by James Seabrook
​Folk R&B Sample - Las Vegas by The Narrators
Piano Ballad Sample - Dancing in the Rain by The Narrators
(Not available online)
Recorded & Mixed by James Seabrook
Mastered by Jamie Sitar
​Assisted by Jorg Gergis
​Folk Pop Sample - Throwing Sparks by Shaun Bosch
​​Folk Rock Sample - Holding On by Shaun Bosch
​(Tidal | Spotify | YouTube)
Recorded, Mixed & Mastered by James Seabrook