Lots of units have them, trying to get them all listed here would be about impossible.
Having said that, keep in mind the rubber roof on your current MH (assuming it's the one in your signature) isn't the same as you'll find today.
Most today use a TPO material, the older ones are EPDM - 2 completely different animals. Like you, I would shy away from an EPDM roof, having owned (3) TPO type roofs now I'd take another in a heartbeat. It's as tough as nails and wears like iron - and if there ever is an issue it's a LOT easier to take care of.
I also own a TT - it has the true EPDM rubber roof. As part of
the rebuild I replaced the roof, by myself. After the prep work was done it only took me a few hours to glue the new rubber down - fairly easy job that still looks great today.
Also keep in mind just because it's "fiberglass" doesn't mean it's quality. Do a search on all the issues Winnie has had with their roofs;
Is Fiberglass always better? I don't think so.
And then there was our friends with their Georgetown. They too wouldn't buy a unit without a fiberglass roof. Sure it was fiberglass alright, I guess, but "quality" isn't a term I'd use to describe it. They no longer have the Georgetown, and the roof was just one of many issues.
Check the thickness of some of the stuff builders are laying down - it's paper thin stuff that will break down over the years. Sun and UV takes it's toll on fiberglass just like it does every other material.
My point? I wouldn't get hung up on a fiberglass roof nearly as much as I'd be looking for a known quality builder.