I use Spotify playlists more as a "tag" rather than as artfully constructed entities for playing in sequence.
So they're best played on 'shuffle'.
fwiw here are a few

folk - accompanied voice 

folk - instrumental 

folk - a cappella 

folk - shanty\sea 

and non-folk
for putting myself to sleep "Dreamy" 

and to wake myself up"Might make you smile" 

https://open.spotify.com/user/headey 
Favourites are in a dozen lists titled "cocktails" but they're not particularly folky.