Bretonnia was influenced by the Asur concepts of knighthood and noblesse oblige when formulating their culture of chivalry, whilst Tilea moreso took after the Asur religion and merchant tradition. However, to them, the elves were ancient history, and what they found of them were scraps of a time long gone by. The dwarfs razed every elven city in the Old World save for Tor Lithanel, and even though they couldn't destroy everything, they did their damned best to try. It's quite likely that the humans didn't even realize that the ruins where they found depictions of a horned god of the hunt married to a goddess of the harvest or frescos of elaborately armoured warriors on horseback weren't made by human hands.
By contrast, the colonies in Araby were never attacked by the dwarfs, they were abandoned because they could be attacked by the dwarfs, and with Malekith's invasion of Ulthuan they could not be defended if they were. Better to evacuate in good order and get more hands to defend the homeland.
In some ways, this paradoxically meant that they left behind less stuff to be found- since they didn't evacuate with dwarf throngs at their heels, there were no herds of elven steeds abandoned in the chaos of the evacuation to interbreed with local wild horses, no religious iconography left behind because every moment of delay had a cost measured in elven lives.
But unlike the colonies in the north, when the elves abandoned their settlements in Araby, the dwarfs were largely content to not bother coming over all that way to knock down some empty buildings. This meant that when the desert tribes that would become Arabyans moved in, they found the elven cities stripped of anything that the Asur considered valuable, but intact. This means that many of those elven buildings remain in use today, and had an enormous impact on Arabyan architechture.
There was also far more of a sense of continuity: the desert tribes have lived in the deserts since at least the time of Settra as vassals of Nehekhara, and must have had at least some kind of sense that there were elves living on the coast. Then they left for some reason, so the tribes moved in to establish a powerbase that would allow them to obtain a degree of independence from Nehekhara and, ultimately, outlast it (though I'm sure the Tomb Kings would disagree that the Land of the Dead is not the same entity as Ancient Nehekhara).
Now, I don't know if the part where the wiki says that the Asur maintained contact with Araby throughout their period of isolation from the Old World is yet more Magical Wiki Fanfiction, but it does make sense to a degree. As I have said before, even after they abandoned the cities the Asur maintained a number of naval fortresses and outposts on islands off the coasts of the Old World, since the Dwarfs didn't build a navy until after the war and even then it was never really big enough to challenge the Asur. Araby is very, very close to Ulthuan and Arabyans avid seafarers, there's no way they didn't run into each other.
Given Arabyan fondness for piracy these run-ins wouldn't necessarily always have been friendly, but again, the point is that to the Arabyans the Asur have never been ancient history, they've always been... there. People that could and had to be dealt with, whether in war or in peace. One might even suggest that Ulthuan checking Araby's westward exploration and expansion was what drove them north and into conflict with Tilea and Estalia, given that they had the Great Desert to the south and Nehekhara to the east, posing similar barriers.
With the different circumstances of the evacuation, there would never have been such a pressure for the Asur to stay away for fear of provoking the dwarfs since they have next to no presence in Araby, and even if Ulthuan didn't make official overtures, again, the distance from Araby to the southeastern coast of Ulthuan is not that big. Given the proximity, familiar architechture, the fact that there would have been quite a few elves still alive who remembered living in Araby... I imagine Araby would have been quite a popular destination for private elven individuals, once Tethlys drove Malekith into the sea and Bel-Korhadris took charge. And when Aethys concluded that maybe the humans had some things worth the elves' time to trade with them for, Araby as Ulthuan's closest neighbour would have been a natural trade partner. It is likely that the first elven enclaves in human cities, which Finubar modeled the ones he established in the Old World during his trip after, would have been founded millennia earlier in Araby. And until the re-establishment of Sith Rionnasc, they would have been the largest.
And where there is movement of people and goods, there is usually at least some degree of movement of ideas. Art. Writing. Philosophy. Language. Medicine. Mathematics. Natural Sciences. History. Geography. Magical Theory. Not scraps cobbled together from millennia-old ruins, but contact with and influence from Ulthuan's living culture.
Araby is Ulthuan's closest neighbour both in a physical sense, and in the sense that they have been the most influenced by the Asur, simply by virtue of being in contact with them for the longest. For the northern Old World, the elves walked out of the pages of dwarven history books when they made contact with the human nations, but in Araby, they have always been a part of their own history books.
, and the humans themselves (any human kingdom cannot be that ideal, both in Watsonian and Doylist terms)
