Sorry about the lack of posts on my part. Bunch of irl stuff that finally got sorted out. Looks like we have a bunch of noms!
Tototdile -> A tier
Pros: perfect availability, well-rounded stats, nice coverage, access to speed control
Cons: lack of power, often relies on flinching moves to sweep
O'l reliable Totodile. It's a very solid Pokemon that is consistantly good, but just not good enough for S. It almost never outright sweeps major fights, but it is also never useless either.
Togepi -> C tier, possibly B even
Pros: extrasensory gud, plethora of disruption and support tools, great super effective coverage, few bad matchups, fast exp group
Cons: egg time waste (also makes it hard to get one with serene grace), lackluster stats, often relies on luck (metronome, ancientpower)
Looking at its stats, I didn't expect too much from Togepi, but it was actually quite good. It has a versatile movepool with plenty of support options, which makes Togepi almost always useful in some kind of way.
Aipom -> A tier
Pros: insane speed tier, fast exp, versatile movepool, consistantly good matchups
Cons: kinda frail, relatively late evolution, 4MSS (which is really a luxury problem, tbh)
This thing plays very similar to Raticate. It has similar stats, similar movepool options and similar matchups. What sets Ambipom apart is that it has better stats, faster exp gain and a more varied movepool that includes useful support options like tickle and baton pass. Both are great, so I think A tier is appropriate.
Cubone -> C tier
Pros: ludicrously powerful, good movepool, nice physical bulk
Cons: terrible availability, relies on thick club (a.k.a. no berry strats), low speed
Cubone is such a hassle to get, because you need to wait three in-game hours to unlock just the ability to catch it, and then you also need one with a thick club. Once Cubone gets going though, it's insanely powerful. It can take out some of the most problematic Pokemon in the game, such as Muk and Houndoom, with just one earthquake. So in short, I think Cubone is worth the wait. It's just that strong.
Good to see that we have another A nom on Totodile. I would say one more test and we can have a
consensus on it being in A.
Togepi C/B is very surprising. We would definitely need to test it more.
I agree with Ryota. I used it awhile back, albeit improperly. I really do not see it in A.
B is the more likely candidate here.
Cubone is a mon that could be
C but it's glaring issues may cause it to be
D as well. As you have stated in it's cons section, that is quite a hefty gap it has to close to reach C. Cubone will need some more tests.
Yanma! Would probably suggest D/E Tier.
Yanma I don't see making it to
D unless someone wants to test it. Your post states most of its issues, but 33 is a VERY late level in HGSS compared to other games. Since there is no way you are getting a level 49 by Lance, you are using Silver Wind. I'm not saying you cannot have a level 49 but that's not efficient and most tests end on Early 40's to mid 40's.
Cyndaquil -> A tier
Pros: great stats, perfect availability, good early game, nucluear fire blasts
Cons: terrible coverage, bad movepool in general, often risky in major matchup, late evolution
This is definitely no S, it just has way too many issues. Still, its fire blast is one of, if not the strongest attack in the game. It's powerful enough to OHKO foes like Miltank and Morty's Gengar if you can get into blaze range. This mon gets carried hard by its stats and availability.
Sandshrew -> C tier
Pros: decent power and good physical defense, comes early, one-diminsional but decent movepool
Cons: really bad special defense, few truly great matchup
Sandslash is a very one-dimensional Pokemon. This doesn't have to be a problem per se, but for Sandslash it just means that it doesn't have good options for major matchups. It doesn't do well in most gym fights, but it does become much better once you unlock the choice scarf. This item gave it some much needed oomph for the E4 matchups.
Scyther -> B
Pros: great stats, technician, phenomenal route cleaner, double team memes
Cons: annoying to catch, questionable typing, iffy late game matchups
It's a fairly unremarkable offensive Pokemon. It has good stats and a decent movepool. It has some iffy matchups though, and it often has to rely on double team to be useful. This is why I don't think it deserves A, despite the fact that technician wing attack is super strong.
Mr. Mime -> B
Pros: great typing, pretty good stats, very unique movepool, effective gimmicks and niches in major fights
cons: very hard to catch, has to be babied until psybeam, paper defense, 4MSS
Mr. Mime is such an interesting psychic type. It has a really weird level up movepool that gives it lots of setup opportunity in major fights. Sub + encore is especially useful to trick the AI. It's also just a strong psychic type special attacker, which is always great in HGSS. It comes too late and it has too many issues for A, but it's a great B tier once it gets going.
Also glad to see Cyndaquil is looking like
A. Another test or two on Quil and I can put it down for a
consensus.
Sandshrew in
C is interesting. After Gen 1, the mon was pretty lackluster as it's level up moves were very bad, Dig had been nerfed, and it didn't get fun to use until Gen 5. Needs some more tests.
Scyther is pretty intriguing at
B. My personal experiences with it are great, though I do know that some fights for it are impossible, example being Jasmine. Currently it is slated in
A, but we could see it fall maybe? Scizor I would tier either
B or
A. Those resistances it has are nothing to scoff at.
Mr. Mime surprises me. I will need to personally test that myself. I didn't think a Safari mon was gonna break the mold of
Cs.
Gastly (Trade) -> A
This is just so powerful. Again, the Gastly period isn't that bad, it gets out of it pretty quickly and is very handy with Curse and Hypnosis (and Confuse Ray). Gengar could even be S if you were to disregard its occassional reliability on inaccurate moves (and the fact you have to rely on Curse initially), though I don't think Gengar to S is the most ridiculous thing, given it has an amazing performance at the E4 too, but I think A addresses better its issues.
Heracross -> A
This thing's E4 performance is all around the place and its performance against the Rocket Executives isn't particularly amazing either (though it can beat Archer's Houndoom). All in all, it's a great Pokemon, but it's not a thing that's consistent enough to be S-tier, in my opinion.
Magmar -> B
This is pretty much a worse Cyndaquil. It does have access to Fire Punch, making it a bit more reliable as a Fire-type Pokemon, but you are rarely using it over Fire Blast in major matchups anyways (Jasmine comes to mind, but again, it's rare to use Fire Punch in major fights). Given it's rather annoying to find (5% or 10%), I think B suits Magmar better, but A isn't impossible, but I think B is more appropriate, overall.
Lapras -> A?
This one I feel like may have been influenced by a high SpA IV. It performed on a very similar level as Chinchou, as a whole, only having a bit of a better matchup against Clair due to not relying on Blizzard. Anyways, I'd like if someone else also tested Lapras (preferably with a bit worse SpA IV, somewhere around 15?) to confirm my experiences.
by the way, I forgot to upload IVs again...
Don't worry too much about IVs. Only if the IVs would make a difference in your opinion.
Good to see Gengar is up there. A couple more tests on Gengar and we can put him in his tier.
Heracross coming in with another
A. At this point, I think we can put Hera in
A (Consensus) now.
Magmar in
B. Not bad. It's definitely a worse Quil, but also the best Fire if you don't get Quil.
Glad to see Lapras may have a potential in
A. Since I am planning on using it, that will give us another test under its belt.
Thanks everyone for your continued tests and discussions!