Best practices for displaying related/joined data

Wondering if anyone has suggestions for how best to display information in pop-ups that's not native to the layer? To be specific, I'm trying to pull in fields from one layer and display it in another layer's pop-up. In Geocortex I would have done this with a data link, but I haven't gotten into that component of VSW yet, not sure if it's the same or more complicated.

I've tried some simple Arcade expressions and in both cases I noticed a half second or so slowdown in the information pulling up in VSW.

Attempt 1
Intersects() function to pull the neighborhood name for the parcel polygons based on where its centroid falls in. Works well in web map, but I noticed it slows down the performance in VSW.

Attempt 2
Filter() function on another parcel layer that has the field I want - expected this to be faster but it was as slow as the spatial expression.

Keeping those generic but I can post the actual expressions too if it's helpful.