What are the differences between the Skaal and the Nords from Skyrim?

Diffrent belief system, and somewhat diffrent culture with same roots think england and europa

Nords - " For the love of Shor!"
Skaal - " You son of a Shor!"

Skaal practice a different religion. They worship a supreme god known as the All-Maker and various animal totems, and fear the Adversary, who they believe to be the source of all evil.

'The Greedy Man,' if he is really 'Shor' and not one of his 'more evil' avatars (Lorkhan/Sheor), is seen as someone who takes away the gifts of 'The All-Maker' (the wind, water, sun, beasts etc) in times when the Skaal get complacent with their every day lives (which sounds like a more hard-line Shor attitude ie dying an honorable death.)

IMO It's likely that they regard Lorkhan/Sheor and Shor as different entities (which is basically right) because they still retain some of the ancient Nordic animal worship and still acknowledge Kyne as the Mother of Men. Also the book 'Sovngarde, a reexamination' which was wrote on Solsthiem fails to distinguish Skaal Nords from other Nords in regards to Shor worship.

Let's hope they're not as obnoxious as the Skyrim Nords nowadays...

There's no race that aren't generally obnoxious. Dunmer are perhaps more so.

Niah my bet is that they would be also obnoxious only instead of OMS you are ruinig our culture it will be OMA you are ruining our Nature