Perhaps you should check the comparison in http://www.prophotonut.com/2015/01/05/fuji-x-series-portrait-lenses-compared-inc-56-apd-50-140-zoom/
I currently own 56mm F1.2, and I like the results and focus speed. I also have 16-55mm F2.8, which focuses much faster in any reasonably good light and also has a pleasing bokeh, but obviously it's not quite as creamy as the 56mm. Based on the review above there are few good slightly cheaper lenses for portraits. 60mm seems to have quite nice bokeh, as does 55-200mm at longer focal lenghts. All the lenses listed are very sharp, certainly sharp enough for portraits.
If you want to take portraits and don't mind missing autofocus, there are plenty of manual focus lenses available that can be adapted to Fuji X moun. I used to have Asahi SMC Takumar 55mm F1.8, it was a lovely lens but didn't get much use after getting Fuji 56mm so I sold it. Just look for good manual focus 50-135mm lenses, there's no shortage of them and as long as you check the lens reasonably well (both reviews and in person), you'll likely end up with a good portrait lens for a fraction of the Fuji 56mm cost.
Just try to be sure you get a lens in good condition and don't buy a lens for which you can't find a review (or test extensively in person). While there are many great old manual lenses to be had, there are also many in poor condition with fungus, delaminated lenses, dust or scratches. Also some older lenses have very interesting bokeh, so make sure it's something you like before buying as that's a matter of taste.