And don’t worry about -unwrapped packages unless you know why you need them. In general -unwrapped packages are not usable out-of-the-box, so don’t use them unless you are wrapping them yourself.
When I tried both libreoffice and libreoffice-fresh, ‘fresh’ seems to be the newest version (in the sense of updates to libreoffice itself as a software). It looks like the maintainer is keeping an older version of libreoffice for stability, and ‘fresh’ is the newest version which will have the latest updates, but might have the occasional bug.
You’d have to contact the maintainers to be sure though:
qt is appropriate if using a qt-based Desktop Environment like KDE Plasma, if you have any issues with the look and feel of the apps. I use fresh without qt on Plasma though, as I’m not that picky about things like menu/icon cosmetics, and it looks just fine to me.