"people can politely agree if they think so or not" this is literally opinion based
However, there are Pokemon who share cries with only slight differences, so a question asking for Pokemon with similar cries wouldn't need to be opinion based. This doesn't mean that there needs to be a large official thread for the question.
And I would also ask why it matters, but I personally think that this is a much better question than half of the questions that have been asked in the past year. There have been many questions that are much more trivial than this that haven't gotten a "who cares?" or "why does it matter?" on them.