Is there a notable difference between “Outstanding” and “Good” primary schools?

My family will need to move home before my daughter starts reception (daughter is currently only 14 months but we’re fast out-growing our tiny London flat and want another child soonish). I didn’t grow up in the UK so I’m not familiar with primary and secondary schools here. Strongly considering a move to Manchester, possibly Altrincham, to be nearer my husband’s family. It has a reputation for good schools and I see most of them are rated as such by Ofsted, but there are a few rated Outstanding as well. I can see that being in the catchment for those schools is really tight and they’re oversubscribed.

We’d move much before we’re applying for reception places, so I don’t think we’d see any schools before we actually buy/rent up north. Plus, even if we found a home in the catchment for one of these schools, it seems like there’s every possibility my daughter still wouldn’t get a place.

So a few questions here that I’d really value some perspectives on:

Are Ofsted ratings the “right” thing to look at?? Is there anything else that gives a better or complementary perspective on a school without seeing it in person?

Assuming Ofsted is a useful resource, is there a notable difference between a school rated good vs outstanding?

Should we be visiting schools even before moving to help determine where to live? (This seems a bit mad to me but maybe it’s not ?)

Two of the Outstanding schools are faith schools (one Catholic, one C of E). I’m not Christian so I’d really prefer not to send my kids to these, and I suppose since we wouldn’t have church attendance the odds of getting in would be even lower. But would I be silly for ruling out faith schools?