Gender: Male Location: somewhere within time & space
^^ There is no "classic" LT, ... LT has always been in the same category regardless of Marvel's size.
There is no official upgrade/downgrade concerning the LT's power,
so it confuses me why some here and there have thought this to be a plausibility.
If there had been let's say two or more multiverseS, and the LT was just multiversal,
then we can say, LT was upgraded ... (since he exists in all "multiverseS" for some time)
If let's say the LT had attempted something more than multiversal and failed,
then we can say, the LT was upgraded ... (since he manipulated the power of two megaverseS)
Aside from two anomalies over 1000 years from now,
and "Gods" which remade creation from the Big Bang: Genesis-AE-IB-HOTI,
there is nothing conclusively above the LT. (btw. none of those exist anymore or right now so they're inconsequential)
LT was outright eliminated/killed, if it is shown to have been by anything other than the one above all then the LT was downgraded. The LT would no longer be in position 2, he would be at the very most position 3 which would mean he is inferior to DC tier 2 beings.