I grew up with only classical music in the house, but I remember vividly, aged about 6, sitting on the floor in front of the one speaker of our (then state-of-the-art) mono record player tracking the cello line in a Mozart string quartet.
One answer still is, anything with a strong interesting bassline.
What do I listen to most often? - blues, blues/rock, folk/rock, prog, reggae.
What do I listen to most closely? - baroque, if possible with a score to try to understand how it works.
There are specific songs from genres I'm not into overall (if I'm lucky enough to find them), which just grab me - sometimes because they say something that speaks to me, sometimes because of the bassline.
What do I most love playing? - we're a blues band going back to little-known early songs, but we bring in flavours of gospel, jazz, early rock'n'roll, prog, and indie. I love anything that we all love playing together.