I’ve started to collect good computers that are stuck on Windows 10 that are being discarded. I want to put Linux on them and give them away to less fortunate people in need of a computer. It would be easier if user names and passwords were not part of the install process but part of the first boot after installation. What distros should I look at?
What is typically done, e.g. buying a PinePhone with PostMarketOS or refurbished setup deGoogled Murena phone, is having a default user with a well known password, e.g. 123456. AFAIR when you setup Rasbian you do have an interface to have a default user with a password.
I personally made an ISO of a configured distribution, see https://fabien.benetou.fr/Cookbook/Electronics#SocialWebXRRPi0 and that worked quite well for my use case.