At its height of prominence … 2 or Alexandria’s 5 districts were overwhelmingly Jewish in population …. full stop
Philo Judaeus, born in 25 BCE was the most prominent Jewish citizen and a philosopher who made important contributions to ‘thinking’
Philo represented the Jews of Alexandria in Rome … after the riots against the Jews begun by Greeks who conspired against the Jews for not placing idols of the Emperor in their Temples … was being discussed in Rome before the Emperor Caligula … we know this episode since Josephus wrote about it in his history of the Jews … specifically in ‘Contra Apion’
The Jews were different than the Greeks / Romans / pagans and certainly Christians & later Muslims
Get it?