Most gridfinity socket organizers fit the OD of the socket. Not only is this dimension not standardized across different manufacturers, but this also wastes lots of filament.
The post fitting sockets is obviously standardized. Putting just the posts on a simple plate results in a design using 1/3rd of less of the filament you'd use otherwise.
I printed mine with zero top and bottom layers to show the infill, which I think looks cool. But it's weaker printed this way and may snap off with time and abuse. I recommend printing with at least top layers turned on.
Edit:
14th July 2024 - added 3/8 post plate model
The author marked this model as their own original creation.