I must state at the outset that I have one for sale
HERE so that's clear.
I had a V1 and it was a great introduction to this little mirrorless camera but I did not like the comand dial which was in a position and of such design that it constantly got moved and changed the settings, which as you can imagine was very irritating so I sold it and got a V2, which is of a much better design, slightly more MP and better ISO.
I have used the camera with the 30-110, 18.5 and 10mm lenses mainly for street, walkabout etc but they would work for almost any genre.
The bonus for me is the FT-1 adapter which allows the use of almost any Nikon F lens with metering and AF (but only centre AF) and I have used it for wildlife with a 300 f4 PF and my 200-500 and it works really well ...
Little Grebe by
Roger, on Flickr
There is a dedicated 70-300 which gives full AF and 810mm equivalent and that works well on the V2 ...
Female Wigeon by
Roger, on Flickr
As said, only the V1 & V2 have viewfinders, the V3 has an add-on but it is rare (currently one selling on eBay for £360+ for the V/F only!) and I have only seen one V3 complete with V/F which was advertised at just under £700 without any lenses.
The V1 & V2 are light and easy to carry and very good for most things under around ISO1600, though I have gone above and adjusted with N/R processing ... they won't replace a D850 but are a very useful small mirrorless camera.