In my world as we switch to 2024 for our baseline hill and stone goliaths are tied to a region of large forests, fjords, ice flows. They're more Finnish than Viking though; more Inuit than Scot.
There's also a land with open lava pits, geysers, hot springs, earthquakes, and tornadoes. All goaliths are found in the Ferments. This rough land is relatively even split between the human-ish peoples (2014 goliaths felt much more human than 2024).
I guess if goaliths have a cultural hook in my world it's about connection to primal, raw nature. Their heroes will be druids, barbarians, paladin of ancients, rangers with other classes showing up.
All goliaths also bond with birds, because the most human of the species (also halflings) bond with beasts. Birds can help with finer things (braiding, needle work, etc). And, once, a long, long time ago before there was magic they rode rocs.