“Landslide” - Fleetwood Mac
This is often the first piece I give to my students when they express an interest in fingerstyle playing (but aren’t interested in classical). The pattern is p-i-p-m (thumb, index, thumb, middle) throughout the piece.
In general, p-i-p-m is a versatile RH pattern that can be applied to any set of strings and any chords and sound great. Occasionally throw in your ring finger on the high E string (when the chord allows it) and you’ll really start sounding like a pro! Pretty high pay-off for relatively low effort 👌.
Regardless, be sure to start slow with this!
Best of luck!