I call myself bi because I am attracted to many genders&body types but not all; a few combinations of gender expression and body features don't work for me.

The people I know who are pan say something like "I'm attracted to people's personalities and character, the body is irrelevant". While that's a pretty inspiring way to be, that ain't me.

There isn't really a good term for people like me that has a good etymology imo, but bi is closest.