I am not sure if something like that already exists, but in FMOD it’s called “scatterer sound”. You can make scatterer sound event, add bunch of sound files to it and then play them randomly (with various control options). Good for simulating swarms, crowds, nature sounds, etc. and adding randomization to things like vehicle engines, etc.
I am sure something like that can be set up in BP, but having native functionality would go a long way