We are revamping this project in an effort to help newer players get into the tier, as this list is very outdated and does not reflect how the metagame has developed. Special thanks to Celestavian, Quote and Shrug for running this project while it was active. The new voters are myself,

Fiend Corporal Levi and

gali
The changes are as follows:

Rises:

Fletchling from A+ to S-

Abra from A to A+

Gastly from A to A+

Drilbur from A- to A

Snubbull from A- to A

Archen from A- to A

Ferroseed from A- to A

Staryu from A- to A

Larvesta from B- to B+

Trapinch from B to B+

Stunky from B- to B

Frillish from C to B-

Kabuto from UR to B-

Pineco from UR to C

Bulbasaur from UR to C

Drops

Diglett from S to S-

Porygon from S to S-

Shellder from A+ to A

Magnemite from A+ to A

Gothita from A+ to A-

Carvahna from A to A-

Croagunk from A- to B+

Omanyte from A- to B+

Scraggy from B+ to B

Munchlax from B+ to B-

Skrelp from B+ to B

Doduo from B to B-

Hippopotas from B to B-

Pancham from B to C

Riolu from B to C

Torchic from B to B-

Magby from B- to C

Shellos from B- to C

Tailow from B- to C

Slowpoke from B- to C

Wingull from B- to C

Deerling from B- to UR

Exeggcute from C to UR

Geodude from C to UR

Lickitung from C to UR

Thanks to

Coconut for approving and helping these revamps go through, this is hopefully the first of a series of updated resources to help newer players learn LC oldgens. Feel free to post any suggestions!