Quote:...Am I close?! Thanks to anyone in advance!...
Probably not, Ofnuts is a professional, thinks, works, most efficient ways.
Me, I leaned a bit of FORTRAN 40-something years ago. Most of the things I need/want in Gimp are already done, no real need to delve into Gimp scripting. At least Python is reasonably understandable, script-fu is akin to Sanskrit.
Try and find some simple examples first, never mind the code, look at the relationship between the top "def" and the bottom "register" section to get something in a menu.
Then get your code between that. Just get something working. One line at a time if necessary. Starting Gimp from a terminal can show errors.
Need a loop, but can not get the loop to work ? Then work in a linear mode. Its not a program to control a ballistic missile, keep things simple as possible.
I got a little block of code to work for a blur of 5, copied and pasted and edited for 10. I will attach my effort, you might be able to use it, add your own sections for blur 15, 20, 30...editing each as appropriate. (2 lines one for the blur, one for the layer name)
Unzip, put in your Gimp user profile plug-ins.
Find it in the tools menu, It dumps your jpegs in ../User/'your-name' folder. Not very convenient, look for 2.jpg , 10.jpg
Tried in A Win10 (VM) Gimp 2.10.32
best of luck.