When I first read "Lightweight build", I was thinking 6-7lbs finished weight. If you are looking at 9-10lbs, a LOT of stocks fit that bill.
I am a Manners guy myself. I have three EH1s (two with the ultralight cheek piece option), an EH1A, four PRS2s, and an EH2. I also have a McM Adjustable Game Warden and McM Game Scout.
All but three are rifles between 8.5-10lbs. Including steel actions and an adjustable cheek piece stock. All with decent weight FFP scopes too, nothing ultralight about them.
EH1 w. pillars and sling studs bedded=26-28oz
McM Game Scout (Edge fill) w. pillars and sling studs bedded=31oz
EH1/ultralight cheek piece w. pillars & sling studs bedded=28-30oz
EH1A w. pillars and and sling studs bedded=42oz
PRS2 w. pillars and sling studs bedded=40oz
PRS2 w. Gen 2 mini chassis and sling studs=50oz
McM Adjustable Game Warden (standard fill) w. pillars and bedded=50oz