When adding a guest star who have a namesakes, assuming that the actor already have a character in the given show, it would be really helpful, if either the actor who belong to this show would be listed first, or at least the name of the show would appear in parentheses next to his name.
There's a handful of David Lewis namesakes in our database. One of them is a recurring guest star in http://www.tvmaze.com/shows/30871/unspeakable, who appeared in every episode so far. Every time I'm adding him I see this https://i.imgur.com/WZFnC7x.png Obviously it's not helpful at all, since there's impossible to tell which one is belong to the current show, and either you have to or remember every other actor, or do TVmaze search in other tab. So I'm suggesting that either the relevant David Lewis (third one, from Supernatural, The Magicians etc.) should be the first in the list, or the name of the current show would be listed next to his name.