JAMF Big Sur Authentication

The only time I've seen that is if you're an admin vs non-admin user. 

@AVmcclint so what I have seen is that if you are both admin or non admin you are not prompted at all..

I can download installer from web - Spotify or postman.app and easily move from downloads to applications folder with no gatekeeper prompt ..

OH! I think I know what it may be. In Big Sur, /Applications is invisibly split up into 2 locations. /System/Applications/ is for Apple apps that you aren't allowed to modify like Mail and Home and Calendar. The other /Applications is for apps you can modify.   In the Finder you see them merged together as a single Applications folder. It's not until you go into Terminal and do

 that you see what's going on. I don't have a non-admin account I can immediately use to see what happens if non-admin users try to modify /Applications, but I bet that's what's at play here.