Depending on where you look, there are different numbers of Trados and/or Trados Studio editions. On this page;
https://www.trados.com/product/
Studio is just one of four different Trados products: Enterprises, Accelerate, Team and Studio.
But here:
https://docs.rws.com/en-US/trados-studio-2024-1145319/trados-studio-editions-361771
there are five different Studio editions: Freelance, Professional, Starter, Express and Workgroup.
Whereas here:
https://docs.rws.com/en-US/trados-studio-2024-1145319/trados-studio-editions-303450
"Trados Studio comes in two editions."
I don't want to take time to explore this in order to find out the truth. Why not make an effort to present the same information everywhere?