You are missing the path to the Gimp system plug-ins folder. Therefore Gimp does not load any of the file-xxx plugins.
Have another look at that earlier screenshot.
Go and find where Gimp is installed and check that you have something like this.
Ways you can go after that:
Try clicking that Reset plug-in Folders button. (see your last screenshot)
or
Add the path ( C:\Program Files\GIMP 2\lib\gimp\2.0\plug-ins ) to the list you already have
or
Rename your Gimp profile to C:\Users\Dean\AppData\Roaming\GIMP\2.10-backup Start Gimp let it make a new default profile. See if it makes a difference.
Have another look at that earlier screenshot.
Go and find where Gimp is installed and check that you have something like this.
Ways you can go after that:
Try clicking that Reset plug-in Folders button. (see your last screenshot)
or
Add the path ( C:\Program Files\GIMP 2\lib\gimp\2.0\plug-ins ) to the list you already have
or
Rename your Gimp profile to C:\Users\Dean\AppData\Roaming\GIMP\2.10-backup Start Gimp let it make a new default profile. See if it makes a difference.