Brocock/BRK Left hand BRK

I think they all are ambi, at least the 6 I own are. I'm a lefty and every one I've tried fits me very well. I highly recommend them for leftys.
The Ghost is truly ambidextrous in that you can swap the lever to either side of the gun. The rest of BRK lineup do not offer this feature. But as you describe they fit and function nicely for lefties… 🙏
 
I think most older lefties are more comfortable with a right handed action if they grew up shooting mostly right handed guns over many years. They feel more natural, at least they do to me. As long as nothing is sticking out in my face or hitting me LOL. Also if they have an ambi cheekpiece on the stock all is usually good. Shotguns on the other hand are more critical in fitting as alot have cast on or cast off of the stock which can make a big difference in fit.