However from recent news it appears that can be followed by an appeal which can be followed by a request to reconsider the appeal
Some rulings are made by partial ("panel") courts, for expedience, and when that happens the option exists to request the same court reconsider the ruling, but with a full bench ("en banc" court). That's what's going on here. This pattern of panel/en banc rulings exists at both appeals courts and SCOTUS.
When en banc SCOTUS makes a ruling or declines an appeal, that's the end of the road: there is no higher authority for appeals. It is possible to get SCOTUS to reconsider a ruling, but such requests are truly extraordinary, like POTUS or the Senate asking SCOTUS for reconsideration, with new evidence or some emergency situation at hand. None of that is even on the same planet as this Xinuos stuff.
They're probably not going to get their en banc hearing. And it won't take long to not get it, either: this isn't adjacent to any Great Issues of our time, and it's not an opportunity to thwart Trump on anything he cares about, so it's probably not going any further. If, by some tragic chance, they get an en banc hearing, they still have to win the appeal. Who knows though; appeals courts in the US are rife with irrational and/or highly partisan people. Anything could happen. If that came about, the victory will likely die in SCOTUS, like so many the other miscarriages of justice that come from federal appeals courts.
It's not really that complex. 94-ish district courts under 12-ish regional circuit appeals courts, then SCOTUS. Three layers. The "-ish" in there is because there are some special cases and special regions (DC), but those don't apply in this particular case.