I found the problem, the .bin files were added in gamelist.xml. I checked from where I copied from, my external HDD, and it does NOT have these entries, so these must have been added by Recalbox.

@phreatic Using a network share (on a NAS for example), you can share the same /recalbox/share accross several Recalbox-es on different boards.
You may also share the same /recalbox/saves, however you might get some issues:

We cannot guarantee the version of an emulator on different boards, even in the same version of Recalbox. So, you may face some compatibility issues If 2 recalboxes play the same games at the same time, they could overwrite their saves each other

@ivwshane

Can anyone explain that feature to me and how it works?

Read the documentation:

https://recalbox.gitbook.io/documentation/v/francais/usage-basique/fonctionnalites/systemes-virtuels

And watch the video tutorials (enable subtitles):

https://youtu.be/ZhdgY_2_SIQ?t=1540

I can create a virtual system like one for light gun games but I can create one using genres I choose, is this correct?

Yes. In fact, with that you answered your previous question yourself. ☺

When I enable that, I get some fighters but not all and I get a lot of other games.
My games are scrapped (from prior recalbox versions).

After updating the system, you need to update your gamelists, to avoid compatibility problems between the versions.
Also, for the virtual systems to work correctly, the games must have the correct tags in the gamelist: if the game is not classified under the "FIGHT" genre, it will not be added to the "FIGHT" virtual system.

I recommend using external software to update your gamelist (and/or edit manually if necessary) - it is easier. I recommend Skraper or ARRM (use whichever you prefer):

Skraper:
https://www.youtube.com/watch?v=G388Gc6kkRs&list=PL2oNQ0AT7fx2ExiSNrfHUzga5GnogI4sh&index=22&ab_channel=Recalbox ARRM:
https://forum.recalbox.com/topic/11850/arrm-another-recalbox-roms-manager?_=1609592968003

@zing Auch wenn 7.1.1 nicht mehr unterstützt wird 😞
Lösung ist:
Die letzten drei Dateien im Ordner share/system löschen. Inkl. recalbox.conf .Neustart

@wastedthelight Unfortunately not for me. Was set to "automatic" by default. I've read that it may help setting it to "system", but not in my case:
Controller pairs, but no input reaction in any case, also not in Emulation Station. Other controllers (PS4, 8bitdo N30 1st gen) work fine in 7.2, though.

@RustyMG yes, I'd love to see those machines in their own theme. But as you mentioned, all those machines are already available within the c64 system folder.

@felipeadms It's not a problem, and I'm sorry, but there's no point in mentioning version 6.0 in the title if you're using version 7, and, as I said, you won't have support for outdated versions.
I think this topic explains it better:
https://forum.recalbox.com/topic/17186/problem-custom-es_system-cfg