The most submitted books to CGC (as of April 21, 2020) are: Amazing Spider-Man #300 (22,136 copies), New Mutants #98 (18,620 copies), Wolverine Limited Series #1 (15,400), with Amazing Spider-Man #361 (15,107) soon to jump ahead of Wolverine into 3rd place.
BUT… if you focus on a particular label… let’s say CGC 9.8… which book would be the most common in that particular grade? It’s not ASM #300… it’s not New Mutants #98… and it’s not the other two books at the top of the list. The most universal CGC 9.8 belongs to Spawn #1.
Here are the most common books for EACH of the CGC universal grades:
CGC 10 – Batman: Damned 1 (309 copies at CGC 10)
CGC 9.9 – Batman: Damned 1 (649 copies at CGC 9.9)
CGC 9.8 – Spawn 1 (5,425 copies at CGC 9.8)
CGC 9.6 – Amazing Spider-Man 361 (4,814 copies at CGC 9.6)
CGC 9.4 – Amazing Spider-Man 300 (3,314 copies at CGC 9.4)
CGC 9.2 – Amazing Spider-Man 300 (2,440 copies at CGC 9.2)
CGC 9.0 – Amazing Spider-Man 300 (2,096 copies at CGC 9.0)
CGC 8.5 – Amazing Spider-Man 300 (1,697 copies at CGC 8.5)
CGC 8.0 – Amazing Spider-Man 300 (1,189 copies at CGC 8.0)
CGC 7.5 – Incredible Hulk 181 (945 copies at CGC 7.5)
CGC 7.0 – Amazing Spider-Man 129 (875 copies at CGC 7.0)
CGC 6.5 – Incredible Hulk 181 (749 copies at CGC 6.5)
CGC 6.0 – Amazing Spider-Man 129 (631 copies at CGC 6.0)
CGC 5.5 – Incredible Hulk 181 (538 copies at CGC 5.5)
CGC 5.0 – Incredible Hulk 181 (594 copies at CGC 5.0)
CGC 4.5 – Incredible Hulk 181 (440 copies at CGC 4.5)
CGC 4.0 – Fantastic Four 48 (412 copies at CGC 4.0)
CGC 3.5 – X-Men 1 (317 copies at CGC 3.5)
CGC 3.0 – X-Men 1 (378 copies at CGC 3.0)
CGC 2.5 – X-Men 1 (277 copies at CGC 2.5)
CGC 2.0 – X-Men 1 (224 copies at CGC 2.0)
CGC 1.8 – X-Men 1 (155 copies at CGC 1.8)
CGC 1.5 – Amazing Spider-Man 1 (121 copies at CGC 1.5)
CGC 1.0 – Amazing Spider-Man 1 (129 copies at CGC 1.0)
CGC 0.5 – X-Men 1 (122 copies at CGC 0.5)