Not so much dub ,but a nice reggae Bassline to play that’s not too difficult is this, its one of my old time favourites, it’s more about getting the feel and you can play just behind the beat on this , cut the treble and turn up the bass 🙂
I know you like your metal and punk, and I’m not sure if it’s something you would like, but years ago I remember the Clash did a sort of reggae album