4, 6
Alright here you go. Kind 4 is on the graph but it's so small you can't see it. Kind 6 is signficant. Also I calculated it without rounding this time, so it's more accurate. https://image.nostr.build/0bb55afb6b8009ac14000d5b26f81e5d40c058f98891e02dd049d874189b9dbf.png
To my amazement, kind 3 is actually very small. I guess because it's a replaceable event, so each person only has one of them. Still you would think the massive pubkey lists would be huge, but I guess most people aren't actually following a million users. https://image.nostr.build/c7768b176e78b8b209381ba600648eda858446601fb96fb3b54173e375c1ffbf.png
Last one, here is a basically complete graph of common event kinds by disk space. Maybe I should nuke the entire "other" section of this graph to free up space. https://image.nostr.build/ca189e536431391acb9f203fa0b1c544190f851d3d70de3c1d1f408f7b71faf5.png