1. Straight Outta Hades - TV-14-DLSV (Original rating)/TV-14-DSV (Re-rating) - A spider jacking off doesn't get a TV-MA.
2. Circle Jerk MCMXCVIII - TV-14 - A mention of eating excrement isn't a D.
3. Three Demons and a Demon Baby - TV-MA (Original rating)/TV-14-DLSV (Re-rating) - Originally rated TV-MA for the scene with Satan in snake form inside Gary, and Gary giving birth to the demon baby, but it's too moderate.
4. Healy - TV-MA - Frequent use of "shit" doesn't get an L, and someone jacking off doesn't get an S because it's not shown clearly.
5. The Tree-Huger Bomber - TV-14-SV
6. Torture - TV-14-DLSV
7. Eddie the Demon - TV-14-LV
8. Golden Fiddle Week - TV-14-DL
9. Lee - TV-MA - The scenes with Lee having sex with Gary aren't explicit enough to get an S IMO.
10. Hammerman - TV-14-DLV - Need to rewatch.
11. Snow Job - TV-14-V (Original rating)/TV-14 (Re-rating)
12. The Damned - TV-MA (Original rating)/TV-14-DLSV (Re-rating) - This episode got rated TV-MA-LSV, but it's very moderate.