>>49901775Well most of those except two are legendaries. Rotom as I said is using technology to speak so it's not really talking talking if you get what I mean. There's an Oranguru, who are said to be extremely intelligent, who can barely piece together a short sentence, sounding more like a caveman than an extremely intelligent being. I think it was "Gu do it" and another one says something similar. Other Pokémon are shown being able to pick up on some words like the honnedge at the hotel but all it says to you is "weeeelcome" or something like that, like it can't say the word properly.
The best example of this at work is in Arceus.
https://youtu.be/ljdgCCZ4CrwSkip to 3:45
Here an Abra gives you a letter from Cyllene explaining to you what it can do for you as well as the situation. 10 minutes later you get a scene like this
https://youtu.be/sJo2jMnR2SIOne of the lake trio speaking to you via telepathy. The question is why didn’t the Abra do that? By giving you that letter the writers are implying it can't talk to you, despite being a psychic type, but the lake trio can. The answer is that one is a common Pokémon and the other a legendary. Aside from Zoroark and Rotom only legendaries so far have shown the ability to speak via telepathy. If the writers wanted to give the impression that Pokémon can talk and communicate, at least psychic types, this was the scene to do it.