Which Extreme trials require strategy/communication?

[LilimoLimomo]

The best hint: if unsure, look for guides on youtube and then join/make a practice party.

The thing is, I actually want to avoid looking at guides because I prefer going in blind. That's why I was hoping someone could point out if there was a pattern. For example, if it was like "Extremes started requiring explicit coordination in Stormblood's 3rd Extreme", then I know to focus my efforts on the fights before that and to not try to setup blind runs for the fights after it, at least not with any expectation that we could complete it without communication/coordination.