Practical System Design Interview questions to test genuine knowledge

I believe most of the questions available on the internet are quite redundant to test someone's system design knowledge. I'm not looking for typical questions like building YouTube/Instagram/Whatsapp, which are only for beginners. I'm looking for questions which you are able to answer on the basis of your personal experience, in depth questions. e.g how did you use indexing/sharding/query optimisation/rate limiting etc in your project? what would you do in a so&so situation? the questions which show me whether a person has actually worked on the systems instead of just having the theoretical knowledge. I know it depends on how the interviewer asks the question, because it's supposed to be vague but I'm still looking for very specific questions. So please tell me, what are such questions which you like to ask someone or the questions which you were asked in an interview ? or just share your interesting system design interview experience, would be helpful to others.