Or a divine Sorcerer, though I've heard some complaints that's one of the weaker sorcerer takes (I don't have enough context to say why).
Well, here's the thing. In theory, the four tradition spell lists are balanced against one another. In practice, they are built around the wizard, druid, cleric, and bard classes. Out of those, the Arcane list is the strongest, which is balanced by the rest of the wizard being weaker (worse hp, less exciting class feats, and so on.
The sorcerer gets to choose a spell list, but the rest of the class is based more-or-less around the wizard chassis. So if you put the
cleric divine spell list on a wizard-like chassis, that's going to have a little less oomph.
In addition, the divine list is heavy on heals and condition relief, and low on offense – particularly general-purpose offense. Many of the divine list's offensive spells are alignment-based and require a deity (because by the book their alignments are limited by the deity's alignment – it would be reasonable to use the sorcerer's alignment for these spells, but that's not RAW).
Further, condition relief leans heavily on the counteracting mechanic, which wants you to use high-level spells to counter high-level threats. But it's hard for a sorcerer, with their limited repertoire, to be ready with
dispel magic,
remove curse,
remove fear,
remove paralysis,
remove disease,
neutralize poison, and whatever else all at high levels. The cleric can even take a class feat that deals with this (
Channeled Succor), but the sorcerer has no such luck.
The primal and occult lists also have a lot of condition relief, but they have enough offense that you can focus on that instead. The divine list does not.
I haven't noticed any, partly because Golarion elves, dwarves, gnomes and so on are, in practice, pretty conventional for the D&D-sphere.
I was mainly thinking of feats like
Devil's Advocate, which requires Chelaxian nationality. The Character Guide has some similar feats for other ancestries, like
Wildborn Magic which is only accessible to a particular elven ethnicity.
The baseline ancestries as described in the core book are pretty vanilla, yes. The Character Guide gives more Golarion-specific information about different ethnicities and cultures belonging to the various ancestries.