I have completed all the interview rounds with Google. Sharing my experience here.

First coding round: No hire

• Could not understand the question itself. The requirements were not at all clear and I realized it quite late in the call. Hence, as expected, it went terrible for me.
• Question was related to graph. Had to rank people based on input results. Not every person's rank was deterministic.

Second coding round: Leaning Hire

• I was expecting a strong hire here as I completed the question within 35 mins, but interviewer mentioned that I did not write test cases, just discussed it. So I was rated "Leaning Hire", even though everything was on point. I felt dissapointed after knowing this.
• Question was solved using sliding window concepts and some customizations on top of it. Gave a linear approach to solve.

Third coding round: Stong Hire

• This went really well. Was able to answer all follow ups as well. Question was a classic Trie example with a follow up using sorted string array.

System design round: Leaning Hire

• This is my weak part. Interviewer was quite friendly and conversation went well overall. The discussion revolved around caching.

Googleyness: Hire

• Standard googlyness questions. As per recruiter, had a good feedback overall.

Team Fit Calls:
I went through couple of team fit calls(both for SRE) but did not have a match yet. One of team needed higher experience and other found some one else.

I am already serving notice with couple of offers in hand. I still have 15 days and have conveyed the same to recruiter, not sure if this helps though.

Update
Got HC clearance for L4. Recruiter told me the approx CTC which is pending with compensation team.
But it has been 3 days since that happened and I have not received any more updates.