Actually they are just following their own "trial system" based on that:
2022 World Gold medalists are directly qualified for the last round of trials but they have to wrestle in 1 tournament this winter. Ghasempour, Amouzad and A.M. Yazdani just did that. (A. Yazdani is being treated like a gold medalist)
2022 Silver and bronze medalists are qualified for the Takhti Cup but they have to wrestle in 1 tournament this winter. that's why Atri, Emami, Yazdani and Zare are going. Nokhodi didn't need that, he wrestled in Iowa.
everybody else has to wrestle at the nationals to qualify for the Takhti Cup.
after the World Cup they added something new, Savadkouhi and Azarpira (because of their good performance in Iowa) are exempt from the nationals, still they have to fulfill that criteria (participating in another tournament this winter)
that's why these 4+2 guys (and nobody else) are going to Croatia.
and actually if someone reads and follows all interviews, (from coaches, federation members etc) they all indicate that Ghasempour is seriously considering to wrestle at 97kg for the Olympic year.