Hello!
Had a Karat interview first time in my life. Problem was not from LC but to be fair is not so difficult in terms of DSA.
For those who are waiting for the interview in Karat, be prepared to write code from scratch including libraries etc. Also, your code will be runned. You'll be asked to compile your code and perform an output in main function. For me it was quite strange and unusual.
Whole phone screen process:

1. 1 min talk about your tech background
2. Answering 3 theoretical questions about DSA and Complexities within 10 mins
3. Coding questions (1-2 problems). Second is usually a follow-up to previous.

That's it, due to unusual format I guess I was kinda frustrated, so prob a reject ;(
Besides coding problems, it's also depends on who will be your interviewer, I was unlucky to get one who IMO saw the problem first time, I was trying to ask them questions, clarifications but they only repeated the problem statement.

Good luck!
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