Best worlds for a kingdom

EricErian​ your Egyptian word looks amazing. It's very interesting to see what you did with the place.

I also like your idea of the blue, white, red, green and golden Knights. It gives me ideas to link the different royal families in my game. 

FairlyFairyXOXO​ that looks like a pretty castle. Nice of you to mention the name of the creator. I will look and see if I can find it on the gallery. I'll need to find some nice but playable castles for my game. Building them all myself would take up way to much time. 

It would be nice, if there was a way to Either delete the cars or change them into horse & cart appearances to fit the timeline. 

Here are my ideas for kingdoms....

Oasis Springs - Alien kingdom

Windenburg - Germanic Royal family living in Von Haunt Estate. I mean, come on. That place is way too beautiful to be an off-limits museum.

Forgotten Hollow - Vlad's Castle!! I haven't played Vlad yet, so I have big plans in store for him...

Sulani - A Merfolk kingdom, duh!

Glimmerbrook - Hecate, the Goddess of Witches will be Queen 😍

Mt. Komorebi - A Japanese monarch in the Yukimatsu neighborhood - the biggest open lot in the world.

And finally...

Innisgreen - As OP said... Who can resist a fairy kingdom 😍😍😍😍😍😍😍😍😍😍😍

Oh, and...... The African-inspired neighborhood in the new pack was at first thought going to be a Wakanda type world, but since I'm trying to learn isiZulu, I thought it would be a much better fit. 

Henford-on-Bagley and Windenburg are probably recommended if you plan to have nobles with horses.

Personally, I like your first two choices. When I build a castle I like to place it on a 64 X 64 size lot.

While I do plan to (eventually) make a base Save, where the extra "kingdoms" are will probably depend on the story I decide to tell for the given save.  If I don't care about royalty in that save, I probably won't do anything beyond the default of Ondarion.  But if I set up something beyond that, there are some good candidates, most of which have been covered...

Windenberg is obvious.  I even built a Von Windenberg Castle based on Highclaire Castle (aka Downton Abbey) when the Castle Kit came out.  Available on the Gallery (plug, plug)
Henford on Bagley just feels like a smaller part of a larger nation (with Britechester), so that may only get a Dutchy if anything.  This will probably vary by save, too.  Britechester, by contrast, won't get its own nobility... even if there was room for it.
Tartosa will likely become a Principality, like Monaco.  I don't play there often, so setting up (and cheating up) a royal household there and then letting things go feels about on brand for me.
Tomarang may well get some sort of Nobility.  I need to do more research into South East Asian historical kingdoms first
Innisgreen seems easy, but as they have the fairy and non-fairy sections, maybe it will be under contest between the humans and the Fae... heck, that may even be where I put my spellcaster Nobles.  This may also be a by save thing.
Forgotten Hollow - Vlad will finally have a day (night?) job in my saves, as Vampire King... or maybe Prince (VtM, anyone?)
Glimmerbrook - probably not.  Not because it's small, but because I see it as "ruled" by the Sages as a council of 3.
Ravenwood feels like it should have a creepy old haunted castle around somewhere, but that will probably end up being a by save thing.
Nordhaven, Mt Komorebi, and Ciudad Enamorada (which I really need to play in more) could get something, but don't "feel" right to me, kinda like Britechester.

The "US/American" worlds of Willow Creek, Oasis Springs, Chestnut Ridge, Del Sol Valley, San Myshuno, Brindleton Bay, Evergreen Harbor, San Sequoia, Copperdale, Moonwood Mill, and Gibbi Point* likely won't get any Nobility unless I make some drastic changes.  I don't care what Judith Ward or the Landgraabs think.

And anything can happen in Newcrest.

*I know Gibbi Point isn't neccisarily American, and yet it has this weird feel of a mix between somewhere betwen rural Puget Sound, Yellowstone, and New Zealand, so I can't picture a monarch there either.