Not sure where to put this kind of post.
But recently, I found something quite fascinating from a few years ago back around when Gen 7 started, where
Codraroll brings up three-stage evolutionary families, namely what he would refer to as ATEFs (
Atypical
Three-Stage
Evolutionary
Family). You can see his full post
here, where he talks about them in more detail and does some stats about them too. But basically, he talks about three-stage evolutionary families there, but Gen 6 and Gen 7 were awfully short on TEFs that weren't due to traditional design conventions (ie starters, regional bird, regional bug, and pseudo-legendary), with Gen 6 having only 2 ATEFs (Florges and Aegislash) and Gen 7 having a grand total of one (Tsareena). Gen 5 is still the lead in terms of ATEFs, with BW introducing 12 ATEFs.
Now let's look at Gen 8. It introduced a grand total of around 81 new Pokemon, plus 2 alleged mythicals which would put the number of new Gen 8 mons to around 83. When it comes to ATEFs, Gen 8 has definitely taken a step up from the past two gens, albeit a small one, with three full new ATEFs plus one due to cross-gen evolution (Obstagoon). This puts us at around 4 ATEFs in total.
He has already done the stats on the past 7 gens, but looking at Gen VIII, we have:
3x starters (Rillaboom, Cinderace, Inteleon)
1x early bird (Corviknight)
1x early bug (Orbeetle)
3x ATEFs (Hatterene, Grimmsnarl, Coalossal)
1x pseudo-legendary (Dragapult)
+
1x ATEF from Cross-gen (Obstagoon)
Plus Obstagoon, that's a total of 10 three-stage evo families: 83/10=8.3. This is pretty solid, and a step up from Gen 7, back to more than 1 TEF per every 10 new Pokemon added. Plus the 4 new ATEFs are quite cool, which is a bonus.
Now let's also do the statistics as a bonus if you exclude the TTEFS (Starters, birds, bugs, pseudo) from the count:
That leaves Gen VIII with 65 remaining Pokemon: 65/4=16.25. This leaves a ratio that is around 16 If you look at the ratios Codraroll brought up back in that post, this leaves us with a roughly 1:16 ratio of ATEFs. This is slightly higher than the first three gens, but nonetheless a step up compared to the number of mons introduced this generation: definitely a considerable step up from Gen VI and
especially Gen VII. Gen 8 introduced a few more Pokemon then the past two and a lot less than Gen 5 and still less than Gens 2/4, but it definitely did better in bringing more ATEFs to the table within the Pokemon than the past two gens, which I think is pretty neat, plus one of them being a cool cross-gen evo (Obstagoon). I do like that they paid a little more attention to having more three-stage evo families, even if it's not that many compared to say, Gen 5 (then again, Gen 5 introduced so many new Pokemon and Gen 8 kind of not a lot).
Anyway, just wanted to bring that up for funsies: I find that old post from Codraroll incredibly fascinating and brought up some stats about TEFs some years ago and I felt it was fun to pick up off of it with the new gen and new batch of mons.