These are some test files, and a short overview of them, from JefferyJ. His YT channel is an excellent resource:
And here is the description with links:
I've made a handful of EzCad test grids in past videos, some for power vs speed and others mainly looking at changes in frequency. The process of setting up 50-100 individual pens and assigning them to little hatch boxes is tedious and time consuming so feel free to download, modify, and use them however you like.