In Eeschema the connector symbols are pretty simple and generic (and I’m OK with that).
In Pcbnew there are at least 44 different libraries for connectors, inclusive a whole library just for connectors from Molex.
Molex is not a connector type, but a brand name, and the Molex library has multiple connector types.
I suspect there are some 150 different kinds of connectors in those libraries altogether, and some go from a single pin up to … a lot of pins.
For me it’s sometimes a bit of a struggle to find the right connector in there, and sometimes I think about making a PCB with one connector of each type, and with silk screen text of the library name and/or connector type name.
An overview like that will give you a quick answer to what all these connectors look like (if they have 3D models), and their relative pitch and size. (therefore, using a 10 pin connector as example for each connector type seems logical). Maybe 5 pins for the high current connectors such as the Phoenix_MC.
It probably should be split in 3 (SMT, THT & High Current), to make the size of the PCB fit on a normal piece of paper, so a 1:1 printout can be used as a first shift for connector selection.
This will also be an instant overview for which connector types 3D models are available.
@Rene_Poschl I believe you’re a mayor in KiCad’s library management. If I made a PCB with such an overview of connectors, would you consider it useful enough to be made a part of KiCad’s “Demo” projects?