At least Microsoft and Amazon have the same interview style as google. The questions might not be as hard, but the interview style is same. All sorts of DS and algos. Infact, one of my friends once went to a microsoft interview, where even the interviewer had a leetcode like website open on his browser and asking questions from there directly.
Everybody follows the reputational leader. You can say Google ruined tech interviews.
Google didn't invent whiteboard interviews. Microsoft was doing it way back in the early nineties.