The most common cheat is probably gaining money or experience, but there have always been pretty extensive mod menus for GTA Online with tools from invincibility to making your vehicles rainbow, to randomly causing other players to explode or setting hundreds of muggers on them.

In 2015ish, I used to cheat, other than getting rich, all I was interested in doing was making an indestructible chrome bus with smoke trails that I’d drive around picking up players in, to teleport us all to North Yankton and back like a tour guide.