At least not in the way that lets say Atlanta was a few years back. There used to be a couple of K-Girl agencies, several Thai Girls and a handful of good old fashioned American agencies several years back, but all I know of now is one K-Girl Agency that I have been very happy with, there are a couple of Thai Girls that have a kind of a loose agency of sorts and there are also a couple of "studios" with mainly American girls who don't offer full serve, and of course there are dozens of AMPs ranging from "no extras" to full GFE,
That said, there are some great options in Dallas, P 411 has well over 500 providers in Dallas, I just did a check and here on a Sunday afternoon there are 15 "Available now" ads and 39 providers "online" as of 4PM local time on a Sunday.
Another option of course are the SB sites, SA has thousands and thousands of SB's to choose from, you could see a different SB for breakfast, lunch and dinner for a hundred lifetimes and never have to do a repeat unless you wanted to. The last SB I saw in nearby Ft Worth I had a great time with, her ask was $400, I responded by asking her how long a date would that get me and she responded "until you get tired of me" We met at about 6 PM on a Friday night and I finally left her apartment (no hotel necessary) at about noon the next day. As Herb would say "Life is good" lol
Oh fuck, I just reread your post, most of my information has nothing to do with what you are looking for, my bad. I will leave this post up just in case someone else is interested in the Hooker world in Dallas. lol
To answer your actual question. Yes there do seem to be an inordinate number of "models" in Dallas, For some reason this city has always attracted a lot of models and would be models. I know it's not NYC or LA, but maybe it's the Dallas Cowboy Cheerleader type that seem to flock to Dallas. Whatever the reason Dallas has some great looking women. Much better than nearby Houston which seem to attract more of a blue collar crowd. There is a huge difference, for example if you go to a Rangers or Cowboys game there are hundreds of women that are "model quality" try going to an Astros or Texans game and you'll be luck to see a dozen.