My guitar teacher had a huge blues collection and insisted we learn a bunch of his favorite songs for a variety of reasons - IIRC strumming technique all in the traditional I-IV-V, 12 bar blues arrangement and of course learning minor and blues scales. I might have been 12 or 13, didn't really care much for it at the time.
Except I was just introduced to Hendrix (via Wayne's World actually) and totally picked up on some blues in the music. Then I started listening more.
My teacher started me off with Robert Johnson (though I didn't appreciate him until years later), and of course the 3 Kings, B.B., Albert, and Freddie...
I got into them right away. From there it was Muddy Waters, T-Bone Walker, John Lee Hooker...etc.

Then of course SRV, which lead to more more Hendrix, the Allman Bros, Clapton, Cream, Led Zeppelin, etc...lots of blue based rock.

I dunno if I have a preference for the old Delta or Chicago blues or not, I guess I'm not that fussy.

Jazz took me a lot longer. I didn't mind a lot it, but never really found myself eager to explore it that much. My collection was limited to more contemporary stuff that didn't really wow me. I'd dabble in some stuff like Kenny G or Diana Krall or whatever but never really connected with it.
Only last year did I finally just suddenly develop an ear for it I guess. I"ve been on an extended binge since October.
Miles Davis, John Coltrane, Thelonious Monk, Wes Montgomery, Ella Fitzgerald, Duke Ellington, Edmund Fitzgerald, etc..

I'm one of the organizers for a little Jazz and Blues music Festival very small Canadian town we moved to a couple of years ago has been running for 17 years now or so. Year 3 for me. It's a rockin good time for 1 week every year.

This year we got Gov't freakin' Mule...I'm a huuuugge Mule fan. Quite an accomplishment for a completely non-profit, volunteer run outfit in a town of maybe 60,000. Can't wait for September.