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Hello vistascape,
You could use Option 3 in the tutorial below to hide these notification area icons. They will be placed in the arrow expansion menu instead.
Hide or Show Notification Area Icons on Taskbar in Windows 10
In that case, you can check your startup items to see if there may be an item for these program's notification area icon. If so, you could disable them to stop showing the icons.
Add, Delete, Enable, or Disable Startup Items in Windows 10
Check the other registry locations mentioned in the tutorial to see if they may be there instead.
If not, then you may need to uninstall the program to remove them. Of course, you would only want to do this if you don't use these programs.