It looks pretty likely. Certainly in the modern era.
Mihawk vs Prime Garp can go either way, but he’s stronger than all the other Marines, and miles stronger than the other Warlords.
Imu and the Gorosei are the only potential exemptions, what with being immortal eldritch abominations. But so much of them comes down on how they actually end up getting beaten. I do still expect the Gorosei to ultimately be weaker than the likes of Kaido, Mihawk, Shanks and Dragon, because the regen clearly isn’t infallible or they’d never be beaten.
Sengoku and Doffy were amazed that Mihawk actually bothered to show up to the meeting we saw him at, he was only there to hear about the Strawhats.
As for Marineford, he ignored orders, walked out and suffered zero consequences.