Since I’m old and need to deal with administrating a bunch of machines for work, I settled on the most dull and unsurprising distros of all: debian. Sure, when I was younger and eager to learn and with much time on my hands, I used gentoo (basically what is now arch) and all the others too.
Don’t recommend using FTP. It’s a shitty old protocol that needs to die. Just use nginx or apache with directory listing enabled.