Thunar uses GVFS to do this. This is what I have been trying to tell you all along. You are using GVFS when you do this.
GVFS provides command line tools to mount samba shares. Use them if you prefer GVFS to CIFS e.g.
gio mount smb://<server>/<share>
To figure out where it is mounted:
loginctl show-user --property=RuntimePath --value "$USER"
Make a link from the mount to somewhere in your home directory if you like.
Sorry to need to say this, but this is the last I have to say on this topic. You are asking for commercial support for your business without giving back anything in return.