Targeting a Top 50 Target List?

i'm interested in, like, what have you found to be successful segmentations to look at if we're looking at a target list that's a few hundred a an and how can we narrow that? You know, for example, we know verticals are an option, but anything else, in your opinion that has worked well? Y, i was, i was using 50 as an example because that there was literally, like a publication of top 50 children's hospitals in the us. So we just alined with who those those ones were as our golds. Yes, maybe that was also a bad number to throw out.