Do not read too much into interviewer assignment. Firms have scheduling constraints, interviewer availability changes, and candidates can be matched with people from many different practices.
What matters is whether you can stay composed when the surface details change. This guide on staying calm under pressure during a case interview is directly relevant when the interviewer feels more senior or the case feels unfamiliar.
A different industry should not require specialist knowledge unless the interviewer gives you the information. Keep returning to the problem, clarify unfamiliar terms, and structure from first principles.
After the interview, evaluate your actual performance rather than the interviewer profiles. Did you structure, calculate, synthesize, and communicate well? That is far more predictive than who happened to be on the calendar.