There don’t seem to be many travel guitars from the big brands. Those that exist are from specialist builders - I believe that there’s a shop in Brighton which specialises in travel guitars. I can’t remember the name but a search for travel guitars+Brighton should find them. Assuming they survived lockdown, that is.
My former boss had a folding electric traveller guitar which he used to take on his trips to regional offices.
He loved it, I thought it was awful. Action so high it was like an egg slicer and the electrics were dreadful. In fairness, it did fold and, apart from the action, was pretty well set up otherwise.
I had a Steinberger Spirit for a while. It was just about usable as a travel guitar (I think I got it onto EasyJet as hand luggage) but I found it a bit underwhelming to actually play…
The Yamaha was the closest thing to a “proper” guitar - I didn’t care for the steel string version but that might just be me. The Nylon was excellent though - this thread has reignited my GAS for one.