Custom grep command to sort all flagged installed apps into their package-manager. All you need to do is to enter the command in the terminal, replace <app-name> in the command with your selected app and it will sort it for you.
This includes dpkg, snap and flatpak packages.
( echo -e "\033[1m\033[4m\033[34mSnap packages:\033[0m"; snap list | grep -v Name | awk '{print " "$1}'; echo ""; echo -e "\033[1m\033[4m\033[34mFlatpak packages:\033[0m"; flatpak list | grep -v Application | awk '{print " "$1}'; echo ""; echo -e "\033[1m\033[4m\033[34mNative packages:\033[0m"; dpkg -l | grep -v "^ii" | grep -v "^rc" | awk '{print " "$2}' ) | grep -i --color=always <app-name> || echo -e "\033[1m\033[31mNo results found.\033[0m"