Which is the Stock/Lollipop based ROM closed to stock? topic

Main idea is that I have started to like LG's stock ROM.. never thought will happen. I like many of the features like the in call small floating window, their incoming call windows in locked/unlocked state.

I have been installing cooked stable ROMS on my HTC's for long time... until got the Oneplus One; which I did not even root :)

Now want to get some de-bloated and optimized ROM to get some performance improvements as I really think the phone chokes on display sometimes..

I don't see the very familiar HTC ROM chefs here.. so any recommendations will be greatly appreciated. Thanks !