THE LAST OF US - BILL & FRANK

If by "a Jewish Perspective" you mean, not using any material from the New Testament, you'd need to tell a very alternate universe version in your version of the story. Demons (and dybbuks) would exist, although there are different Jewish traditions about what they are -- but the concept of Fallen Angels isn't ever part of the story, so the Crowley and Aziraphale story might be a little harder to pull off. You'd lose the Four Horsemen, of course.

Here's a lovely article on Demonology from a Jewish perspective over the centuries: https://www.jewishvirtuallibrary.org/demons-and-demonology

You still have the apocalypse, of course (lots of lovely apocalypses predicted) but they tend to tie in to messianism. So you'd probably have Crowley and Aziraphale working to stop the Messiah from turning up and ending the world.

(Here's a great set of essays on Jewish Apocalypses: https://www.associationforjewishstudies.org/docs/default-source/ajs-perspectives/ajsp12fa.pdf?sfvrsn=17fadb06_2)

It's not really theological differences, though. Both Good Omens and your hypothetically More Jewish version would primarily be leaning into cultural myths and stories and stuff that aren't anywhere in the Bible anyway.

In Genesis 6 there is mention of something called “Nephilim” (נפילים), which is etymology related to the word “Fallen” in Hebrew (the root N-P-L, נ-פ-ל), and it refers to either angels who came down from earth to mate with humans or their offspring.

“When men began to multiply on earth and daughters were born to them,

the sons of heaven saw how beautiful the daughters of man were, and so they took for their wives as many of them as they chose.

Then the LORD said: "My spirit shall not remain in man forever, since he is but flesh. His days shall comprise one hundred and twenty years."

At that time the Nephilim appeared on earth (as well as later), after the sons of heaven had intercourse with the daughters of man, who bore them sons. They were the heroes of old, the men of renown.” (Source)

The lore of the Nephilim, the names of the specific fallen angels and them being the reason for the biblical flood is also expended in the Book of Enoch, a non-canonical to most sects ancient apocalyptic text that predates Christianity. It can be read here.