A good printer test initially for FDM printers stress testing them to failure. It has multiple challenging features to test the printers and settings like accuracy, overhangs, bridging and fine feature capabilities. This enables to optimize settings for your printer and optimize models for your printer's capabilities.
I'm pretty happy with the results on my Ender 3 KE with standard Creality settings but an increased bed temperature.
If you want the original details with background explanation, search for kickstarter-autodesk-3d. The work is licensed under Apache 2.0