POD is there is no Jesus, Mohamed butterflied away.
The changes to the timeline will of course be spectacular. But what are they?
Well, Christianity is just a proselytizing sect of Judaism in my opinion.
Considering how many sects and branches Judaism had it seems almost inevitable that sooner or later one of these sects would decide to proselytize among the Non-Jews, the Gentiles. And most definitely that sect would have the similar success that the followers of Jesus had.
That will be Judaism for the Gentiles/Non-Jews. That will be without Christ, probably without crucifixion. But most definitely that would allow pork-eating and would not be too concerned about circumcision as it would have to fight for the followers in a highly competitive market.
So Christ or no Christ everything will be quiet similar to OTL give or take a hundred or so years.
I am not sure about Muhhamed though. Some kind of Abrahamic religion had a good chance to take root in Arabia. But without Muhammed that might be just another sect, I mean without Muhammed uniting all the Arabs and following conquests Islam had little chance to spread so far.
So without Muhammed there would have been some peculiar Christian/Judaistic sects in Arabia probably modified to suit the local Arab religious traditions.