I'm a fan of P. Catherine but when it comes to recordings of guitarists paired with NHOP, there's one I like even better -- "The Unforgettable NHOP Trio Live" with guitarist Ulf Wakenius.
https://www.youtube.com/watch?v=LhApkmT-gB8
What is the scale of measurement you're using to discern whether a record is "by no means unknown but . . . underappreciated" ?
I genuinely curious. I wouldn't know how to go about this, myself.

