you dont need a bike to be light stock. it just doesnt matter. you'll end up breaking things and swapping for lighter parts, and ditching stuff, like brakes if you buy a stock bike that actually has em.
just pick a bike on some online shop that has features you want. eventually you will make it lighter with newer, better parts. it happens to everyone. when i bought my bike stock, it weighed 33 lbs. i got rid of the pegs, brakes, put some new bars on, smaller drivetrain, and thinner grips. i cut my weight down to 27.5 lbs. just get used to it and drop weight as you go.