Well, I would say that making the interests very obvious, like in the profile pictures I mentioned, could help. Even if they are niche or odd, your matches will be into or accepting of them if you are able to show them in the app. And, in general, part of attracting people is standing out and being unique. So unless they are really weird and off-putting, showing your interests will help even if the potential matches' attitudes are more of "that is interesting" or "I could accept that" rather than "I share all of those interests/hobbies exactly".

And just because you listed things like "deep conversations", you do need to be more specific since there are a lot of people trying to seem smarter or more interesting than they are that will use vague things like "deep conversation" or "sapiosexual" to seem smart. This is one of those things where being specific helps because whatever your current obsessions are, whether it is organic gardening, symbolic logic, late modern era French history, etc. It will come off more genuine than random person trying to sound smart like "I like intellectual conversations and the Oxford comma" even if the potential match doesn't share the exact same set of obsessions and interests.