Indeed there are some issues that needs to be addressed and now I am passing them to the Romanian HR @ovidiu10:
- Rareş Ispas is not loan, but neither was a free transfer. He was signed by Poli Iaşi on an undisclosed amount from Sepsi
- Catalin Itu is the same story, not on loan but not a free transfer. He was signed by Poli Iaşi on an undisclosed amount from CFR Cluj
- Alin Roman again, it's half the story. He was on a season loan from Amstatten for season 2022-2023 with option to permanent move from 1st July 2023, that Poli Iasi activated
But the last one is correct: Samayoa is a full transfer - Iasi signed him free but with 15% next sell clause
PS: this is official info from Romanian FA, not from transfermarkt.