Proper Terms To Search For Desktop File Icons Issue

Looking for proper term to search for desktop file not showing icon associated with a program. Find lots of Desktop Icons but not file associated in search. Are they controlled by the Appearance Icons files? Did just try and did not change.

In 20.04 they worked. Now 22.04 lost a couple as in picture, the KeePassXC and FreeCad. Rest seem OK.
Initially on upgrade had KeePassX and icons not correct, searched and found they stopped developement and switched to KeePassXC. Just reinstalled KeePassX to see, no change.

Desktop Files