Read my plugs, was carbon fouling on 93 pump gas but not on 96 vp?

Cylinders 2 4 6 8

Cylinder 2

78F0785D-0B81-44EC-A6B0-7B5D1099CDD0.jpeg

D065A160-3225-4E69-866A-B74462D82D19.jpeg

Cylinder 4

DF8DFD9C-0287-41DD-97BA-CEAC9B3CEF7F.jpeg

CFEBF6C7-0CDD-4BF2-B452-CB55AB67D8F9.jpeg

Cylinder 6

D7BE6FB6-E47E-4783-B2A1-7DD25E479E46.jpeg

E6B23A13-E87A-4D0C-A745-7A575ABE2B10.jpeg

Cylinder 8

DD851649-D09D-435E-AD33-BCD874E4938E.jpeg

1BFF6E7E-DA94-48D4-8E6B-56101D9F78AF.jpeg