Maybe some additional requirements would help the definition of “travel” guitar.
My main guitar is a Strandberg and it travels well, and also plays well. You could probably say the same for most headless guitars as there really is very little compromise with those.
The guitar I posted about earlier in this thread is on another level of travel. It fits in a backpack and is compact enough that you could play it comfortably while sitting in the passenger seat of a car. It has a built-in headphone amp and an aux input. Of course to get those features, some compromises and design decisions are made.
I also have a parlour-sized carbon fiber acoustic that travels really well. I have taken that on several canoe trips. It is very resilient and isn’t affected my moisture or humidity.
So, depending on how I plan on using a guitar or how I am travelling… I have options.