I previously made some logos for the generic international and junior leagues
used in historical games. They're mostly based on modern federation badges,
so not always era appropriate in some cases.
Also I have no idea how to edit out the white backgrounds.
But feel free to use/modify any of them to add here if you wish.
Link:
https://www.dropbox.com/scl/fo/kxps1...=5euw6jag&dl=0