I think it most likely has to do with catering to the PH audience and what they may like. HN, DN, and other sites work the same way, most of the time your produ

I think it most likely has to do with catering to the PH audience and what they may like. HN, DN, and other sites work the same way, most of the time your product/content has to cater to that audience's interests. It can also depend on when you posted, since new products go live on the homepage after midnight.