Just Another GM's page

Try here: Pathfinder Wiki Slavery

Some of the nations of the Inner Sea aren't mentioned at all, so they might frown on it, but not have outlawed it, or similar. They also might have been missed (Like Nidal, as an ally of Cheliax, they most likely allow slavery).

It should narrow the list of countries to check.
Depending the scale of your game, you might be able to just ignore some places as you might never go there.

Hope this helps

Between Divs, Daemons, Demons, and Qlippoth, it's also about the motivation behind it. Same as the alignments NE and CE, both get confused and it is a very blurred line between them.

Qlippoth are far older, beginning/before time old. The original owners/rulers of the Abyss (and still rule the deeper levels, and no-one knows how deep it goes). They hate mortals because mortals become demons, their true enemy, who took the abyss away from them.

Demons are the "babies." Created relatively recently, by some enterprizing Daemons. They are the souls of CE mortals given birth by the abyss - they are sins taken to excess, no holding back. They do what they do for fun.

Daemons devour souls, they feed off mortals. They crave destruction, because it gives them food.

Divs are according to "myth" fallen Genies. They worked with mortals, then the relationship broke down, and it went all down hill from there.
I was wrong earlier, Divs are NE not CE, the page I read as a reminder was wrong.

Edit: Lemeres already said it.

Bigrig has stated it well

Another great place to go and look for sort of quick guides is The Pathfinder Wiki
Specifically: Outsiders

If it helps, here's Outsiders by home plane (Note the as some, like Angel have more than one home plane are not always the same alignment and not exceptions to the rule, Or like Div's they may not have the alignment of their home plane)
Heaven (LG) - Archons, Angels
Nirvana (NG) - Agathions, Angels
Elysium (CG) - Azatas, Angels
Axis (LN) - Axiomites, Inevitables
The Boneyard (TN) - Psychopomps
Maelstrom (CN) - Proteans
Hell (LE) - Devils, Asuras
Abaddon (NE) - Daemons, Divs(CE)
The Abyss (CE) - Demons, Qlippoth, Demodands

Shadow Plane - Kyton (LE)
Any plane - Aeon (TN)

There aren't really tree hierarchies, most are all their own type. And while there is a sort of hierarchy of types (Demons are higher and more powerful than Demodands), each type has it's own internal hierarchy (Balor out-ranks a Succubus, although there are always exceptions somewhere) that makes this more a generalization.
Of note Devils (Asmodeus), Demons (Lamashtu), Qlippoth (Rovagug) and one of good outsider types (Sarenrae), have a Major Deity ascended from their ranks (well, Devils are more; made in a deity's image, aka deity came first), most of the others have Demi-gods.

If it helps, everyone accidentally gets them mixed up sometimes.

Good Work.
And it's filling up quite quickly.
Wondering if you'd be able to combine demographics like Alignment by faction?
I say this because I spotted both Lawful Good and Chaotic Good members of the Dark Archive, which is lead by someone who is Lawful Evil.
I'm not discouraging this in any way, (it makes for good role-playing), I'm curious how many have joined factions for less obvious reasons.

Also nice to see humans leading the way.