Please make such a hopper which can filter a certain item which is configurable by player and sends it to connected inventory. If it is not the correct item, the hopper will pass it to next hopper and implement it to 1.16.1. I am making a raid farm and really want to sort undying totems and crossbows. Please implement such a feature to 1.16.1 .

You could just install https://www.curseforge.com/minecraft/mc-mods/ezpas to do the sorting for you. It has whitelist pipes that can be configured extensively.

Filtering is on the way. Give it 10 weeks or so, it's apart of the item conduits that are currently under development.

I tried ezpas and it works but is a little bit
confusing to use.Thank you Katorone for suggestion.