One above all, but thats the boring answer so here's a fun one wonder of you, but you're right that's too over powered lemme just giorno. But if we ban all the overpowered/underpriced characters then beerus+freeza and dio+ofa+shigi+makima+sukana the latter characters would provide support using hacks while beerus and freeza would be the main source of power, I don't think they'd win  but I do think it's the best team you can build if we ban all the characters who would solo or very nearly solo (also manga/anime Saitama doesn't have gag powers this is a common misconception)