Don't remember everyone for certain, but my E4 team in Yellow was something like:
Pix, Pikachu
Evix, Jolteon (Electric types got X ending names for the first hour or two of gameplay)
Graveler, forgot the name
Erst, Cloyster. One of my friends insisted on replacing my Lapras with a Shellder back when I only cared about levels. Once I figured it out I was kind of upset, until I evolved it and found Spike Cannon
Aero, Aerodactyl (Yeah, lame name. I only had him because I thought fossils were super powerful, and dragons were super powerful, and Aerodactyl was both)
Pie, Butterfree. Second Pokemon I caught, neglected him throughout my run. He was at level 42 when I beat the E4, only there for Sleep Powder really