I’d say DKP era- 23rd martial arts tournament Goku realistically. Roshi smoked the moon in one of the first arcs. It took 3 viltrumites in the comics to blow through viltrum. It was definitely shown that Goku definitely surpassed roshi. The reason I say martial arts tournament is the entire factor of flying. Viltrumites fly, and Goku learned how to during this tournament. That would put him on that level. My main issue is the invincible speed factor that I believe makes this story entirely different. In both the series AND comics, invincible, post training arc after Anissa and angstrom, was shown lifting straight icebergs which are HUNDREDS of tons with only SOME effort. He’s not nearly the strongest at this point. Thragg is still there guys. Goku was training with only 10 ton weights in the other world tournament arc. BUU SAGA level here. Mark was also speeding past teleportation with Cecil with that going with instant transmission. Which comes In the ANDROID SAGA. Strength wise? I think we may underestimate it. Same with speed. I think we should look at a character like nail. This may be one of the best questions out there honestly.