Sorry, I know this is discussed like a million times here but there are so many different interpretations of its power that I would like to confirm if my understanding is right.
So there are different claims that the Attack Titan doesn't actually have any abilities related to future sight, and was all just manipulated with Eren using the founding titan. I don't think that's true at all.
My understanding is the Attack Titan can only see memories from future Attack Titan users, but they specifically can't choose when or which type of memories to send down to its previous users, so basically the Attack Titan's future sight ability is useless. However, Eren having both the Founding and Attack titan, he uses the Founding's power to send memories to previous Attack Titans.
I think this also proves that only the Attack Titan can see future memories, because Eren could have just manipulated any other titan. He could have manipulated the previous Founding titans who had way more power throughout history, or the previous Warhammer titans and learned more about the Tybur lineage himself, but since those titans don't have the specific future sight ability, then he can't show glimpses of the future to the past titans that isn't an Attack Titan.
Is my understanding correct, and was it always this obvious?