We are currently in the process of reorganizing the footprint libs (combining all libs into one repo. fixing some easily fixable KLC errors, renaming to have a universal naming scheme, …)
I am reluctant to include footprints where i do not know what to buy. (But i am also reluctant to exclude the hard work of our contributors.)
For this reason it would be nice to know what these connectors are. This would allow us to include them in the footprint lib for the v5 release. (Maybe somebody here on this forum does use these footprints and therefore knows what they represent.)
A quick google search lets me believe these connectors might be offered by TE-Connectivity. But i am not really sure about that. (Or more precisely: Not sure about what connectors from this series exactly fit the footprints in our repo.)
Link to old repo: https://github.com/KiCad/Connectors_Mini-Universal.pretty
State of the footprint transfer: https://github.com/KiCad/kicad-footprints/blob/master/TODO.md