There's a bit of mild 'bossa' sway in those two songs you mentioned. Also, the guitar sound is nylon/steel acoustic, probably mic'd. So, I checked out some RTs with that in mind. One which might come close is 2726, set up with 'shots' as suggested by rayc. You can play around with other fingerpicking (bossa, latin, peruvian, etc) because many of those RTs feature simultaneous plucking of two strings.

For example, with 2726, you could set up the Bars this way, using 5th fingerpicked chords (C5, G5) to emphasize the two-note chord sounds:
1a) C5 C5..,G5.. 2) Am/G Am..,G5.. 3) repeat bars 1 and 2, etc.

You can eliminate some of the shots from time to time in some of the Bars, just to create subtle differences in the guitar rhythm and prevent it from sounding like a constant metronome/percussion beat as your song moves forward.

Hope that helps a bit.

Songwriter, not Singer-Songwriter. Dropped singing in time to save a few friends and pets. Website: www.songmaker.ca