On My 4” Forked HT Hack bike I have a set of 710 wide, 2” rise 25.4mm Clamping Azonic thingies, I think they have 5 up/8 back sweep angles from memory, quite good when going down, riding single-track, etc bit high rise for climbing but the bikes not really intended for doing that very often…
For my SS build I got a set of very cheap Kona OEM jobbies off of Fleabay: 710mm Wide again, “Flat” but with 12 degrees sweep (Yep 12!), 31.8mm clamping, still need to properly use them for a long ride but initially pootling with them they seem quite nice, the extra sweep seems to suit the extra width/lower bar position quite nicely, obviously the Logo makes them a Faux pas extraordinaire for most people, but then they are fitted to a Kona so who cares…
680mm low rise EA50s on my “XC” bike seem relatively narrow now, but are still a pretty good width for general riding with a slightly longer stem…
I wouldn’t go above 710mm wide for myself given my build (5’10” with reasonably broad shoulders), Wide bars for the just sake of it won’t work, the bars need to suit the rider, not the other way round.
Buy a set of 750/760s but be honest with yourself, if they’re too wide don’t be too shy with the hacksaw…