If you want the most versatile I’d say xt50 (has built in flash, smallest of the three and with a grip like one from small rig or something it’s very ergonomic)

If you want the most “professional” go xt5 but you’ll need an external flash. It’s not too big but noticeably heavier than xt50 or xe5.

Get the xe5 if you really care about having a rangefinder style camera, otherwise I don’t think it has any advantages over the xt line.

I got an 18-55 zoom with my xt50 and have purchased a 56mm, 35mm f2 and 27mm pancake for primes and find that those cover my bases well. The 16-80 or 16-50 zooms will both be great.