Here's a revised and expanded list.
*A: Bert and Bernice the Pigeon, Volume 2.
**B: Big Bird and Radar the Teddy Bear.
*C: Ernie and Rubber Duckie, Volume 1.
D: Mr. Dinger.
E: Guy Smiley.
F: Forgetful Jones and Buster the Horse.
**G: Grover Monster (2-Pack with Mr. Johnson).
**H?: Herry Monster and Hercules the Plush Doll.
I: Sully (the red hard-hatted construction worker).
J: Biff (the yellow hard-hatted construction worker).
K: Herbert Birdsfoot.
L: Elmo Monster and Dorothy the Goldfish in her bowl.
M: Don Music.
**N: Mr. Johnson (2-Pack with Grover Monster).
Ñ: Rosita.
O: Cookie Monster.
P: Prairie Dawn.
Q: Betty Lou.
R: Roosevelt Franklin.
S: Aloysius "Snuffy" Snuffleupagus.
**T: Oscar the Grouch and Slimey the Worm, Grubby Duckie, and Pachyderm Four's trunks.
**U: Frazzle Monster.
V: The Amazing Mumford.
W: Horn & Hardart, The Two-Headed Monster.
**X: Sherlock Hemlock and Watson the Dog.
Y: Mr. Honker.
Z: Lefty the Salesman.
0: Granny Fanny Nesselrode.
1: Abby Cadaby.
*2: The Count von Count, Volume 3.
3: Baby Bear.
4: Barkley the Dog.
5: Sam the Robot.
6: Zoe Monster and Rocco the Rock.
7: Farley (the green Anything Muppet boy).
8: Murray Monster and Ovejita.
9: The Martians: Murtin, the Male Blue and Stevie, the Male Fuchsia Martian (2-Pack.
10: Countess Dahling von Dahling.
11: Telly Monster.
12: Gladys the Cow.
13: Grundgetta the Grouch.
14: Benny Rabbit.
15: Grover Monster's Mommy and Thomas, Tessie, Timmy, and Tina Twiddlebug.
16: Hoots the Owl.
17: Lulu (the violet-furred female monster who was friends with Rosita and Zoe).
18: Alice Snuffleupagus.
19: Little Bird and Sesame Street lamppost/signpost.
20: Super Grover.
* = Released.
** = Announced Upcoming Release.
