Neither do I own, nor have I ever shot, a SCCY pistol.
However, I have been told reliably that, as you note, they now have two different versions of the gun: One with a safety lever, and one without.
If I remember correctly, the makers of the Grendel became Kel-Tec CNC.
Maybe SCCY is run by a previous employee—or by previous employees.
The Ruger LCP is a very similar design, too.
I believe that when one sets out to make a plastic pocket pistol, the design constraints will make each maker's version similar to every other maker's version.