As a fingerstyle player, you may be able to get next to Ralph Towner's playing pretty easily... check out "solo" or "Batik"... a couple of my favorites are "Matchbook" and "Slideshow", with Ralph Towner (acoustic 12 string and classical) and Gary Burton(vibraharp and marimba)...
Jim Hall is my favorite living guitarist; he has a multitude of fine recordings to choose from... all different size groups, from solo to bigger band stuff, over the past 50 years or so... Pat Metheny is a wonderful guitarist, one of the most notable and prolific in these past 35 years or so...
Jazz is a lot more than guitarists... a wealth of recorded history from so many wonderful players... have fun with this! You have some real treats in store for your ears, heart and head...
There are lots of great, inspiring jazz albums. Here are the ones that won me over:
- Pat Methany Group (the white cover, ECM)
- Miles In A Silent Way
- Pat Martino Consciousness
- Jimmy Smith The Sermon
- Wes Mongomery Picture of Wes
- Alan Holdsworth IOU
Try something like iTunes where you can listen to short clips. Jazz, much like rock, is all over the map. It's evolved in all kinds of directions. I like jazz from the 30s to the 60s and my faves are players like Grant Green, Wes, Charlie Christian, Herb Ellis, etc. But a lot of what falls under the general heading of "jazz" I don't care for at all. Hell, I'm a blues musician, and a lot of what's called blues I don't like at all either. You really need to do some listening to hone in on what moves you. And luckily, nowadays, you don't have to actually buy a bunch of recordings to do that.