I know only Minato Namikaze (The Fourth Hokage). Who are the other two members of Team Jiraiya?
As of right now there is no information disclosed about the other two members of Team Jiraiya.
This was a genin team led by Jiraiya of the Legendary Sannin at some point after he left the Ame Orphans and returned to Konohagakure. Its only known member is Minato Namikaze, who Jiraiya took special interest in. Minato would later become the Fourth Hokage. The names of the other two members, as well as their statuses, are unknown.
However we did actually see one according to the wiki:
In a flashback that Kushina Uzumaki had, one of Minato's black-haired teammate can be seen sitting behind him at the Academy.