There're over 100 F-mount cameras. Surely it's quite hard to choose from?
The current (2nd) generation Fuji really has 9 cameras. Sorted by body types in order of rangefinder-type/ SLR-type/ fixed lens compact:
Budget: X-A5, X-T100, XF10;
Pro-consumer: X-E3, X-T20, X100F;
Professional: X-Pro2, X-T2 plus the X-H1 (basically a video-oriented X-T2)
The budget cameras recycles some technologies from the past and were OK-ishly made. Still make nice pictures. The Pro-consumer and professional cameras all share the same newer and very capable sensor, processor and AF system. The professional ones are more beefier and have pro features like weather sealing.
The recently-announced X-T3 spearheads a new (3rd) generation of cameras that will come in the next couple of years.
Since you didn't specify the features you're after, just browse the product pages to see better how these cameras differ on details like the hybrid viewfinder.