I think Corphish deserves a mention simply due to its raw power; if something doesn't resist Crabhammer, it dies.
196 Atk Adaptability Corphish Crabhammer vs. 212 HP / 196+ Def Eviolite Spritzee: 10-14 (37 - 51.8%) -- 88.7% chance to 2HKO after Stealth Rock
+1 196 Atk Adaptability Corphish Crabhammer vs. 36 HP / 0 Def Eviolite Misdreavus: 22-26 (95.6 - 113%) -- guaranteed OHKO after Stealth Rock
+1 196 Atk Adaptability Corphish Crabhammer vs. 0 HP / 236 Def Eviolite Mienfoo: 18-22 (85.7 - 104.7%) -- 62.5% chance to OHKO after Stealth Rock
196 Atk Adaptability Corphish Crabhammer vs. 156 HP / 92 Def Fletchling: 22-26 (95.6 - 113%) -- 50% chance to OHKO
Now, regarding Chinchou -
196 Atk Corphish Knock Off (97.5 BP) vs. 76 HP / 212+ Def Eviolite Chinchou: 6-8 (24 - 32%) -- 11.7% chance to 3HKO after Stealth Rock
(6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8)
196 Atk Adaptability Corphish Crabhammer vs. 76 HP / 212+ Def Chinchou: 9-11 (36 - 44%) -- 0.4% chance to 2HKO after Stealth Rock
(9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11)
196 Atk Adaptability Corphish Aqua Jet vs. 76 HP / 212+ Def Chinchou: 4-5 (16 - 20%) -- possible 5HKO after Stealth Rock
(4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5)
This means that on average, if Stealth Rock is up, even defensive Chinchou will actually only be able to switch into Corphish once; a combination of Knock Off and switching into Stealth Rock twice will usually put Chinchou within KO range of Crabhammer and Aqua Jet; more offensive variants of Chinchou will be even less reliable switch-ins.
Foongus is able to repeatedly switch into Eviolite Corphish with impunity, but dealing with Life Orb Corphish will be much more troublesome once Foongus's Eviolite is gone.
196+ Atk Life Orb Adaptability Corphish Crabhammer vs. 124 HP / 160+ Def Foongus: 13-16 (52 - 64%) -- guaranteed 2HKO
Now, Corphish doesn't really have a ton of options to get past Croagunk except for the fairly gimmicky Aerial Ace, but the same applies to Carvanha (who can certainly run Zen Headbutt, but that's also a bit niche). However, although Carvanha is the far better cleaner, Corphish is actually able to take a hit or two, on top of possessing Knock Off to permanently cripple specific Pokemon to compensate for a lack of Destiny Bond.
+2 196+ Atk Fletchling Acrobatics (110 BP) vs. 0 HP / 76 Def Eviolite Corphish: 16-21 (80 - 105%) -- 6.3% chance to OHKO
+2 196+ Atk Fletchling Acrobatics (110 BP) vs. 0 HP / 36 Def Carvanha: 39-46 (185.7 - 219%) -- guaranteed OHKO
+1 156 Atk Scraggy High Jump Kick vs. 0 HP / 76 Def Eviolite Corphish: 16-19 (80 - 95%) -- guaranteed 2HKO
+1 156 Atk Scraggy High Jump Kick vs. 0 HP / 36 Def Carvanha: 72-86 (342.8 - 409.5%) -- guaranteed OHKO
I understand that using Stealth Rock for Corphish's offensive calculations but not its defensive calculations is unfair, but I'm just trying to make a point here; although boosted and super-effective hits can be troublesome, Corphish is usually able to survive physical attacks that are neither with ease.
Even outside of the sheer power of Crabhammer (recalling how it OHKOs bulky Fletchling after any prior damage), Corphish still has a fairly potent Aqua Jet, a good utility move in Knock Off, and solid set-up options in Dragon Dance and Swords Dance. Corphish might not be the most notable Pokemon in the current metagame, but I don't think it should be discounted as a threat.
also can I reserve Snubbull and Lickitung