I took one jazz history class in college and really like listening to it when I need to focus or lift my mood. Below are some Spotify links because it saves time over searching on Youtube but you can also search for the titles if that doesn't work for you.
For working to, I love piano jazz without lyrics. Dave Brubeck has complicated rhythms that I suspect work like people say Mozart does to get my brain working in a pattern that raises cognitive functioning. I'm afraid I've overplayed my Brubeck findings as this point and need a new artist who is equally rhythmically complicated but balanced with melody. Most post-70s jazz I've tried has too many notes at the expense of melody. Brubeck still had some space left to meditate on sometimes, but an upbeat rhythm to wake my brain up.
"Castillian Blues" might be my favorite Brubeck song. It's almost baroque classical chamber music but with saxophones and really soft cymbals:
Castilian Blues by Tony Bennett on Spotify
For even more medititative reflection or when I'm trying to calm down at night, I like Charles Mingus. My favorite is "Self Portrait in Three Colors":
Self-Portrait In Three Colors by Charles Mingus on Spotify
I avoid vocalists entirely unless I'm feeling sad and want some happy thoughts, then a romantic standard is cheerful and prettier than modern life. Comedian Frank Conniff mentioned liking Johnny Mercer and got me interested in "I'm Old Fashioned" which one of us thought should be the new hipster anthem for nostalgic idealist romance:
I'm Old Fashioned by Various Artists on Spotify
Sometimes I want a gypsy guitar/fiddle string combo and for that there is Django Reinhardt which speeds me up and gets me working. I may also have overplayed Django Reinhardt.
"Limehouse Blues": Limehouse Blues - . by Django Reinhardt on Spotify
And I have a side project of exploring female musicians and vibraphone players, for which an example of both is Terry Pollard. "Seven Come Eleven" is both her playing and Terry Gibbs I think, and is this delightful cartoon-y energy lift:
Seven Come Eleven by Terry Gibbs Quartet on Spotify