I believe it was a problem on my end using 3 different category IDs, published post status, and “post” type. I ended up making it work with a WP Rest API v2 command and didn’t have to use a custom route so for now I’m ok without using Rest Routes… However, the problem I was having with Rest Routes is that even though the data is defined correctly in the post metadata now, it’s still just giving me back an empty array on the actual response for the url generated by Rest Routes…