I love my Panasonic Lumix GX85, it is not too small like the GM1 and not too big like the GX8.
The GX85 is perfectly balance and comfortable to hold with most of the compact M43 lenses, it gets a bit front heavy when you start using heavy or long lenses on this "thin" body.
Unlike the GX7 it replaced (the GX85 is GX7 Mk2 in Japan), the "front grip" on the GX85 is not thick enough to stabilise a long or heavy lens, this is when I decided to get an external grip.
After much searches, I am shocked that there are less than a handful grips for the GX85, most of them are NOT grips per sec but thumb rests EXCEPT ONE!