GSMPlusVIP is currently the leader for Samsung Knox Guard (KG) and Xiaomi MI Account FRP on locked bootloaders. If you repair phones commercially, the "exclusive" access is worth the premium because downtime is expensive.
The term in their FRP tools usually refers to: gsmplusvip frp exclusive
: Automated software that connects via USB to bypass account verification without manual "TalkBack" or browser exploits. GSMPlusVIP is currently the leader for Samsung Knox