Lomiri on Mobian?

[ryo]

Didn't/Doesn't Manjaro have a Lomiri version? If so, how did they manage it?

Yes, Manjaro has a Lomiri version, though last time I played with it (almost a year ago), it was the least developed out of the 3 (Lomiri, Phosh, and Plamo), but at the same time it was the most slick looking one.
As to how did they manage, Lomiri is just a DE, the UBPorts team fairly recently decided to detach the DE from the OS, so Lomiri to Ubuntu Touch has become basically what Plasma is to KDE Neon, except the KDE team did it in the reverse order from the UBPorts team.