The first sentence of the Wikipedia article is "Urban fantasy is a subgenre of fantasy, placing supernatural elements in a contemporary urban-affected setting". That is precisely what it says. Vampire and the other World of Darkness stuff is Urban Fantasy. The only time D&D was ever urban fantasy was back with Urban Arcana, hence the name.
Ravnica (RaVnica, not RaBnica. I don't mean to pick on typos but its the second time) is not contemporary
Thanks for the hot tip on the spelling.
If you read past the first sentence and get into the meat of the article, here are the characteristics of Urban Fantasy, which seem to fit Ravncia as present din the Guild asters Guide:
"Urban fantasy combines imaginary/unrealistic elements of plot, character, theme, or setting with a largely-familiar world—combining the familiar and the strange. The world does not have to imitate the real world, but can instead be set in a different world or time. Such elements may exist secretly in the world or may occur openly. Fantastic components may be magic, paranormal beings, recognizable mythic or folk-tale plots, or thematic tropes (such as a quest, or a battle of good and evil). Authors may use current urban myths, borrow fictional technologies, or even invent occult practices, as well as using established supernatural characters and events from folklore, literature, film, or comics."
" The urban component is usually found in the setting—typically a large or small city—or even a suburban community in a metropolitan area. Use of contemporary technology (such as automotive vehicles or communications) and everyday community and social institutions (such as libraries, schools/universities, or markets) establish a familiar context. The period in which the action occurs may be the fairly recent past or the near future, but will typically require merely only casual historical or other special knowledge from the reader. The city-setting is a tool; used to establish a tone, to help move the plot, and may even be acknowledged as a character itself."