In a massive crossover set of fanfic they have a Lex Luthor in the different dimensions. The names are different but mean the same thing.

Dresdenverse Alessandro Armata wizard
HPverse Alexandre Armée magical industrialist in America
Teraverse Lex Leger billionaire military contractor
SGverse Vladimir Alexander Volksarmee billionaire military contractor
Buffyverse unknown
Bionicverse unknown
DCU Lex Luthor

This is from the Teraverse stories at https://www.tthfanfic.org/Series-2585
A dozen authors have written stories and there asre several million words.

The Moon Society