Nothing handy nor particularly elegant.
Most of the workarounds suggest creating a Template using Wordpad, with your presets as you desire saving that somewhere on your computer and then setting the properties to "Read Only"
Then appending the path to that to the target line of the properties of your wordpad shortcut located here C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories
So the target line will look something like this
Code:
"%ProgramFiles%\Windows NT\Accessories\wordpad.exe" "D:\Users\Randy\Desktop\Document.rtf"
Mind the quotes and the space between the first set of quotes and the second.
Your first set of quotes whould be identical as above then a space and then your second set of quotes will include the path to and the name of your template file.
This may explain it a little better than I have
https://askludwig.com/tag/change-wordpad-defaults/