I don´t think there are other races which have this on the level of goblins. Overall, nobility isn´t much defined when it comes to WoW, with titles often seeming random and powers/role they have varying per the source. On one hand, you have Lord Bolten Vanyst from Stormwind, who fields his own armies, but then you have multiple examples of Stormwind nobles being effectively just rich landowners. In which case, a rich merchant buying himself a title wouldn´t IMO feel out of place.
I´m assuming you are talking about the character you posted on, which means she´s likely a high elf (going to throw wiki page here for lore if you´re interested in reading it: https://warcraft.wiki.gg/wiki/High_elf
) given the customizations you´re using (it´s a long story, but basically, the void elf playable race is used to RP two distinct races of elves). They´re somewhat of a special category since technically every single person within their race could say they´re a noble (their name in their language is literally “children of noble birth”, or Highborne, as they were the highest caste of night elven society back when there was only one kind of elf), however they still have lords and ladies among them.
Thing with them is, they don´t have access to their country. About 21 years ago in the story, the undead Scourge destroyed their homeland of Quel´Thalas (https://warcraft.wiki.gg/wiki/Quel%27Thalas
), killing off 90% of their population. Majority of their people afterwards switched their name to blood elves (https://warcraft.wiki.gg/wiki/Blood_elf
), but about 10% of the remaining population stayed with the Alliance and kept their old name to differentiate themselves from their kin. Unfortunately for them, this meant that they couldn´t really return home.
Why I´m saying all this is that your character could theoretically be a Lady, coming from upper echelons of high elf society before the Scourge invasion, who lost her home (about half of Quel´Thalas is still in ruins, so even when we revisit the place 2 years from now in one of planned WoW expansions and likely reunite the elves again, she could still be out of luck in terms of getting a cool mansion where she could live) and family.
But, I´d also like to add that the Title part in TRP doesn´t have to be filled. Most people leave it blank. So, if you want your character to be a Lady, go for it. But if it´s only because you feel an obligation to fill that space in TRP, you don´t have to, nobody will take an issue with your character not having a fancy title.