Re: BB Fonts
There are quite many, depending on the browser you are working. If you are on mobile, then just some fonts (Lucida Sans and Corbel) work while all others are converted to Lucida Sans or Arial automatically. Again, that depends on the browser you are using.
For a normal PC browser, there are comparatively many functioning fonts which are hard to determine as far as I know. Just try to use your liked font to check if it's working or not.