Update v3
At least
Wall Level: All A-Class currently scaled to 7-B that don't explictly scale to Genos or someone with a better rating,
Suprise Attack Plum,
Jumping Spider,
Scaledo,
Withered Sprout
Other levels:
Hundred-Eyes Octopus (At least Building/Large Building),
170,000 Year Magicicada Nymph (At least Building/Large Building),
Hammerhead (Multi-City Block),
Bofoy (would need to calculate his missiles to get a tier), Sea Folk (Could hold up a large truck with one hand and were the size of a small building),
Child Emperor (honestly no idea where he sits at),
Withered Sprout (Unknown unless someone can calculate his ice summoning to get a minimum tier number)
Small Town Level:
Genos (early),
Prisoner,
Deep Sea King (Dry and Wet),
Blizzard (Possibly higher),
Demonic Fa (Possibly higher),
Grizzly Nyah,
Do-S (Possibly higher),
Royal Ripper (Possibly higher),
G4,
Beast King,
Mosquito Girl (Could actually be lower since Genos's Low 7-C feat was preformed much later),
Zombiema,
Sonic (Pre-Chapter 43)
Town Level:
Vaccine Ma (possibly higher), Genos (Post-G4), Sonic (Post-Chapter 43), Blizzard and people who scale to her (she could block a attack that would've killed Post-G4 Genos but that may change),
Awakened Cockroach, Heavily Damaged Garou,
Tanktop Master, Royal Ripper (could stab Garou, but considering it uses blades which focuses power in a smaller surface area it may not necessarily need as much AP to damage him).
At least
Town Level:
Carnage Kabuto (base), All the Dragons currently rated as "At least 7-B", all S-Class heroes currently rated as "At least 7-B" that haven't been mentioned
Large Town Level:
Beefcake,
Silverfang,
Suiryu,
Choze (monster),
Metal Bat (pumped up),
Darkshine, Carnage Kabuto (Carnage Mode),
Bakuzan (monster),
Homless Emperor (AP only since he could kill himself with the energy balls),
Flashy Flash,
Elder Centipede,
Overgrown Rover,
Bomb,
Psykos,
both BS an GS (may need a Small 7-B rating),
Orochi (may need a Small 7-B rating),
Sweet Mask,
Watchdog Ma,
Garou
At least
Large Town Level: All of the MA executive memebers,
Pig God,
Atomic Samurai
Genos Scaling: Genos's Small Town level feat happened in Chapter 17 of the manga. This is the scale from that to G4 Genos to my knowledge: Genos (Saitama fight parts) -> Genos (Meteor Parts) -> The Deep Sea King (Base and Rain) -> Genos (Alien Attack Parts) -> Genos vs G4 (Genos was heavily damage but managed to win) -> Post G4 Genos (In a simulation casually killed DSK in two attacks when he was hydrated)
Genos's Low 7-C feat is 7.40568 x 10^12 joules and the gap between that and baseline 7-C is a difference of 3.2768x. So everyone who has fought Genos after his G4 parts should likely be 7-C. For example Tanktop Master would be 7-C since G
arou said he was slightly stronger to a even more upgraded post-G4 Genos
Speed: Everyone who doesn't scale to Atomic Samurai is downgraded from MHS+, everyone who scales to Genos is High Hypersonic, all of the A Class and possibly some of the B-Class scale to training Saitama. Blizzard's speed is iffy though since Genos and Sonic are FTE to her so I dunno if much supports her having a High Hypersonic speed