See now NI SESSION GUITARIST – PICKED ACOUSTIC has the same as UJAM in the first post, it will play the recorded patterns to the chord track but has also the sample set for Melody with keyswitch articulations.
PG made some SFZ instruments up for the Biab Sforzando library, it would be good if they could do the rest of the RTs & RDs.
These were made using the instrument's Holds RealTrack Bass Samples for Sforzando
https://www.dropbox.com/s/3tp03y524o7i1yv/RealTrackBass-Sample.mp4?dl=0
https://www.dropbox.com/s/6krkobu3yb65wsr/RealTrack-ShinyGuitar.mp4?dl=0


Biab Track Injector for Reaper
Free Biab Chord Picker Tool