Acoustic baritones seem to be very rare, and most I can think of have already been mentioned. But, there's one more that springs to mind, the Avante, designed by Mike Tobias and Joe Veilette and sold by MusicYo. I think I like the looks of it, but I can see that many won't:
Joe Veilette also makes baritones in his own shop, but I expect them to be many times dearer than the Avante.
There are also classical style, nylon string, guitars around, like this Aria bass guitar:
It has a 700 mm (27.6") scale, and is tuned in B. Many classical and flamenco guitar builders make these, and also contrabass guitars, tuned an octave below a regular guitar.
Myself, I'd like to try a Tacoma, as I've heard so many good things about them. But as they are a bit too expensive for me right now, I'll keep a look out-, and wish, for a budget Olympia version. And if I wasn't so hesistant to buy instruments from non-European dealers, I would probably have bought an Avante already.