I guess so. I don't remember Jimmy Olsen having his own magazine. I remember several versions of comics that featured "Superman", and "SuperBoy" but I must have missed the Jimmy Olsen comics.
Yeah Olsen’s was ‘Superman’s Pal Jimmy Olsen’ from late 50s till early 70s.
Lois Lane had ‘Superman’s Girlfriend Lois Lane’ same time frame.
They combined with ‘Supergirl’ in the early 70s to become ‘Superman Family’ and that died off in the early 80s.