Yes more than likely you will need root (I'm not sure why someone would want a recovery without root anyways can it even make or restore a backup without root?)
but to use flashify to flash the recovery you need root. Same with getting Fastboot exposed to flash it that way. There is another way using some laf tool someone made for another LG phone, but I have not used it and am just assuming it will need root as well.
I don't recall seeing a stock non rooted rom here.
As to a stock rooted rom, sort of...
It's stock but non carrier specific so no carrier bloatware, and I think some of the LG stock bloat was removed too.