I think I see what you're talking about now, I think I'll give it a shot and see what happens.
okay, so here's what I did...
77: Aglalucrudasiothlediodede, "Phantomchaste", fortress
Owner: The Hale Coven, humans
Parent Civ: The Wind of Marking, humans
warlock: Cemmasade Tempestarrows, human
warlock: Gecalis Raysspread, human
warlock: Siocala Dabblershimmers, human
warlock: Ecadole Chastewealth, human
warlock: Sionsaselo Priesttubes, human
warlock: Caiglo Heavensugar, human
warlock: Sabracethle Churchhide, human
warlock: Gaistiosapho Raysfleshes, human
warlock: Cestaicalapho Crystalmartyred, human
warlock: Mabralalapho Dawntreated, human
warlock: Siocece Mythparch, human
warlock: Ansiculun Trimshimmered, human
warlock: Macesicesass Martyredscolds, human
warlock: Acililepho Futuredress, human
warlock: Sabracethle Treattemple, human
druid: Siocicrabripha Martyrpractices, human
druid: Gaistiosapho Daubgenius, human
druid: Sammailacre Cometgorged, human
druid: Sionsaselo Geniuspear, human
druid: Sabracethle Tourconjures, human
druid: Rilasiommo Granitecoven, human
druid: Esupho Godlyrevere, human
druid: Ecadole Divineumbra, human
druid: Cicasaglo Hayfaiths, human
druid: Gise Stafftummy, human
druid: Lubrabras Pastcudgel, human
druid: Sapho Knightconjured, human
druid: Sacesa Junglemyths, human
druid: Macesicesass Geniusurged, human
druid: Gise Riteplans, human
magician: Coni Combinedmurdered, human
magician: Milo Tiredlistens, human
magician: Kem Yellclimates, human
magician: Mato Slitherdoomed, human
magician: Gozru Hellslaughter, human
magician: Glicila Mythbunches, human
magician: Lalapho Wiltedshrines, human
magician: Thil Watchfulpoints, human
magician: Olng” Hatredslaughters, human
magician: Sammailacre Shrineneutral, human
magician: Tista Coalyell, human
magician: Ago Azureended, human
magician: Tirin Delldances, human
magician: Sizet Tongssculpture, human
magician: Acililepho Martyrcrewed, human
geomancer: Salabre Pickray, human
geomancer: Samnapho Beardchant, human
geomancer: Sabrisaca Windypigs, human
geomancer: Sammailacre Mobaura, human
geomancer: Sabracethle Charmcalls, human
geomancer: Siocelon Monkswelter, human
geomancer: Sabrabraifuceg Handledmartyrs, human
geomancer: Mabralalapho Fangseers, human
geomancer: Mabralalapho Virgincloister, human
geomancer: Ecadole Martyredtemples, human
geomancer: Samnapho Chantemerald, human
geomancer: Cicasaglo Trimheavens, human
geomancer: Caiglo Ironcharms, human
geomancer: Samnapho Dreamedfuture, human
geomancer: Ebrapho Charmdonkeys, human
328 humans
44 dogs...
78: Acrisessapho, "Healedmyth", fortress
Owner: The Healing of Covens, goblins
Parent Civ: The Simple Visions, goblins
warlock: Cacemme Cloisterplane, goblin
warlock: Siocelon Mosscloisters, goblin
warlock: Siocala Futurewilts, goblin
warlock: Sammailacre Ivoryspells, goblin
warlock: Gimmilapho Ringfull, goblin
warlock: Cicasaglo Heavenelder, goblin
warlock: Macesicesass Shinglecomets, goblin
warlock: Remmapho Skirtdragon, goblin
warlock: Gecalis Goddistinct, goblin
warlock: Caiglo Sealempire, goblin
warlock: Sammailacre Showchants, goblin
warlock: Aseciebras Mythyouth, goblin
warlock: Ebrapho Evergale, goblin
warlock: Sabrades Ectomosses, goblin
warlock: Siocelon Glimmerorgans, goblin
druid: Siocaselamma Ectoseizure, goblin
druid: Githlacipho Soaredwindy, goblin
druid: Siosuss Ticksaint, goblin
druid: Sammailacre Webchants, goblin
druid: Sioglan Magicapes, goblin
druid: Racucadain Talonseers, goblin
druid: Aphiofaicreglo Hushsaints, goblin
druid: Caiglo Cloisterpolish, goblin
druid: Susecins Craftconjured, goblin
druid: Siothlediodede Coventongues, goblin
druid: Sabrabraifuceg Heavensclasps, goblin
druid: Siothlediodede Immortalitycharmed, goblin
druid: Cacemme Searchcloisters, goblin
druid: Esupho Insightsdawn, goblin
druid: Ebrapho Seafate, goblin
magician: Shasttol Vigorspread, human
magician: Siocelon Typhoonsocket, goblin
magician: Githlacipho Playrites, goblin
magician: Ecen Snakekisses, human
magician: Cemmasade Glimmeredfamous, goblin
magician: Sioglan Glimmerdesk, goblin
magician: Gabat Youthspiraled, human
magician: Siocecicicradan Submergedchants, goblin
magician: Alacrasilapho Dawntrotted, goblin
magician: Sapho Martyrblizzards, goblin
magician: Racucadain Fatehealing, goblin
magician: Gise Plaincharms, goblin
magician: Calesa Mythtests, goblin
magician: Tode Gorgedsprinkled, human
magician: Aphiofaicreglo Faithtraded, goblin
geomancer: Githlacipho Legendbitten, goblin
geomancer: Ephalibran Roughnesscloister, goblin
geomancer: Sabracethle Enjoychants, goblin
geomancer: Aseciebras Pastjoke, goblin
geomancer: Sacesa Nobleangel, goblin
geomancer: Cemmofaco Lobsterabbeys, goblin
geomancer: Caiglo Musclerite, goblin
geomancer: Sabrisaca Heavenone, goblin
geomancer: Sensilabrain Charmcalled, goblin
geomancer: Glicila Stasisshimmered, goblin
geomancer: Siocelon Cloisterpants, goblin
geomancer: Gecalis Goodtyphoon, goblin
geomancer: Sioceliglaglas Problemfated, goblin
geomancer: Racrins Futurechucked, goblin
geomancer: Sabrolimmainpho Ectoshelter, goblin
251 goblins
4 humans
29 dogs...
So its still only generating one race occupying the site/civ at first. foreigners do end up in the appropriate positions if there are any. I generated a couple of these worlds, one of them had 14/15 dwarven positions filled in a goblin civ, but still no other non-historical dwarf population. total of 14 dwarves, all historical, all geomancers.
So it doesnt appear to be generating a "multicultural" civ from the get-go like I'd hoped. Did I miss something, or are there other ideas?
I guess I could try making any other races forbidden on top of only allowing certain ones for the entity positions, but I suspect they'd just be left empty since there wouldnt be those desired populations anyway.
If worldgen goes on longer and has more wars all the positions will eventually be filled in by refugees/prisoners of war, I reckon, but I'd expect like at least a few non-historical pops in addition, and that doesnt seem to happen. Then again this is an isolationist, non-aggressive civ I'm working with, so they're rarely getting involved in wars. If I stuck this in a few entities that are regularly at war with one another I bet it would fill in a lot quicker, but then there'd be no point in having these entity positions, because they'd have large conquered/conquering populations regardless just by virtue of going to war frequently.