also the trick to your "warps character voices" problem besides that, anon, that is a you problem because i have never heard of anyone having this issue before, is twofold:

you can use icons of actors in more than one role (i know some people hate this but i promise lots of people also do not care, if you're willing to use ai you can use a pb from more than one source) and

you can use icons of individuals whose actual media you have never seen and therefore you do not know who the character being played is and cannot accidentally play them instead, plus

you can use stock icons AND

you can even use more than one pb. it's not common anymore but once upon a time people did this frequently.