Archdevil I don't use smb. In Nautilus, I don't have to.
I'm not trying to poke fun at you. The reason I replied the way I did is because every file broswer on every one of the dozens of distros I've examined used Server Message Block (SMB), a Windows protocol, by default to browse networks. I don't really know why, but it's true. Maybe it's because most corporate user networks are based on Windows? Or it's easiest to implement? Like I said, I don't know why, I just know that it's so.
And I also know for a fact that it's true for every file manager of every Solus edition. I have VMs of all of them, so I've used them all, and they can all access my NAS shares. Using another protocol, like the Linux Network File System (nfs) that I use with my DS415+ requires appending /etc/fstab (file system table) to list the shares, what protocol is used to access them, some options, and where they're to be mounted (usually on folders in /mnt). And most times it requires a "helper" application like nfs-utils in Solus, or nfs-commmon in many other distros.. It's not rocket science to arrange all this, it's just not a default.
This is Nautilus on Budgie. It works the same way. It uses the smb protocol to browse the network. Here it shows my DiskStation415 NAS in exactly the same way that Dolphin did on my KDE Plasma machine. I hope I've been able to clear up some of the mystery for you.