Not myself but there is a paper on it: https://ieeexplore.ieee.org/document/7893784/

I think it is important to note that: the more fingerprints your phone tries to match, the less accurate it becomes (a larger set of data to fuzzily match against). It will give false positives more often, i.e. let other fingers unlock your phone. 2 or 3 fingerprints are probably fine though (perhaps even better…