I'm not a big spaghetti western fan, but I am a big fan of spaghetti western scores and Ennio Morricone. Oddly, enough, I've been looking for little recognized spaghetti western soundtracks recently as well, for a short film project. So this thread may be helpful to me, too, and I may be helpful to this thread.
First of all, a large number of the songs featured in
Inglourious Basterds and
Django Unchained feature little known spaghetti western type songs and a lot of Morricone.
Also, in my search, I have discovered
this thread from a place called the Spaghetti Western Database, which I think could be of help.
If I get to it, I'll try to post some specific tracks I like. For now, I'll just post this Morricone gem from Sergio Leone's most criminally underrated film: