OA1 : Standarddebugging questions.
OA2 :

1. DeepCopy of a linked list with random pointers
2. Find a target number in a Matrix, Matrix is sorted incresing in column and row.

OA3: Email based behavioural questions

Phone Interview: Some standard behaviuoral questions and explain the code from OA1 and OA2 with some followup questions and its complexity.

Got offer in next 3 days!
All the best to you guys !

Edit: I will clarify some questuons here.
I did not accepted offer yet, so I am not sure about team and location.
It is new grad position. Amazon is taking virtual round instead of onsite afaik.
I think, who did the summer internship is getting 1 round otherwise 3 rounds. some of my frieds are geeting 3 rounds and some are getting 1. I see a pattern  here so it is my analogy.