Then you definitely should try out searchleads.co. You'll get both company and contact data. They filter like a huge chunk of unverified data cause they verify leads in real time unlike Apollo, so you're getting the most recent verified data and they do enrichment too just like Clay and very cheap, I think it's like $3 for 1000 leads.
For Clay's built-in "find people" function, it's pretty decent but I mean you can definitely combine it with a more enriched list.