So since Giorno speed now is currently outdated, i will show new scaling for his infinite and up.
Let's start in order with SBR speed revision.
So Love Train barrier is maded up of Infinite Neighobor Dimensions and Funny Valentine can run/travel there
Neighbor Dimensions are alternative worlds/universes/dimensions, whole other space times. they exist all side one another
^ other proofs
despite Valentine and D4C was going deeper, tusk act 4 still reached them
This would garant: At Least Infinite, possibly Immeansurable (for valentine in love train, johnny with act 4 and gyro with ball breaker)
Now let's come to the point,
Ranked "None" in Speed on its Stand stats, those being referenced in the JOJO-A-GO!GO! guidebook as it stated that its ability "is impossible to compare with the existing Stand(s) and measuring rod(s)", by comparison, Notorious B.I.G. and Made in Heaven are ranked "∞" on their speed, with the latter having briefly been able to achieve infinite speed, and also above Tusk act 4, D4C:Love Train and Ball Breaker
Ger Speed would be At Least Infinite, possibly Immeansurable
(Giorno would scale really higher than baseline, likely unquantificable or incalculabe times above baseline due to null stats and the big speed difference)
And Jotaro is stated to be the stronger stand in the game multiple times (like this, implied to be the stronger because he is the only who can fight HA Dio) and scales to HA Dio via being the same type of stand.
HA Dio would have both At Least Infinite, Possibly Immeansurable for both keys, same for Jotaro
I didn't talked about Jorge Joestar because we don't have profiles.
So that's all
Agree: @Astral JeviL