The problem with offering something like that is because of centuries of migration and cultural diffusion Roma culture and language (don’t get me started on that) does vary quite a bit between different groups. It’s sort of like a having an “Ask the Christian” or “Ask the Africian?” thread. There’s just too so many variables.
On the other hand, telling people that - the wide variations in language and customs among the Romani - is one of the useful educational tidbits such a thread could provide.
But, your choice.
If you’re using Romani as a generic term here, Sinti are a subgroup, like Manouches, Gitanos, etc…
The stereotypical look is not identical, but the looks that a given area identifies with their local gypsies do not necessarily spell gypsy nor are they necessarily phenotypical (a lot of it has to do with clothing and demeanor). An example which often gets trotted out in Spain is Lola Flores being paya (not a gypsy) while Isabel Pantoja is a gypsy; the one who looks more likely to be paya by our local standards is the gypsy one.
My youngest brother was one of those blonde, blue-eyed cherubs; Mom, Middlebro and me are brown-on-brown. We were often asked by cops “and the little blonde one, where did he come from?” and I had never thought anything about it other than “cops be nosy” until that kind of stories started cropping up about gypsies. In our case, “yeah, Dad was that blonde when he was little” from a child or the appearance of blue-eyed, ash-blonde Dad was always considered proof enough, but then, this was before DNA testing.
The Flores family is also often used as an example of mixed-culture issues, as her husband was a gypsy and this caused identity issues both for them and for their children. People on both sides thought that it was perfectly fine for the most famous gypsy in Spain to be paya, or for her troupe to be mixed, but alas, the moment the two sides went in front of a priest together! The cries when their eldest first started dating a payo, after all the discussions there had been about whether the children could or could not call themselves gypsies! That kind of stuff is a non-issue now, but it sure wasn’t one back when many of our local gypsies were still changing lastnames every time they moved home.
There is a large population in the Houston-Galveston area.