It's called "star grounding".
I also do it, but I use a ring connector similar to the linked photo.
ring connector - star ground

FTR, that's not my work, just a photo I quickly found online.

There is a bit of controversy over star grounding and ground loops, and noise, whether or not to do it, yada-yada-yada, but I've never had an issue. I just find it easier and tidier like RossCo.