Take a look at justridingalong or Clee Cycles.
Spokes and nipples count for a lot of weight and can cheaply be upgraded for example. The Hope wheels you mention above also have a low number of spokes (24) which I wouldn’t be completely happy with. I’d much rather have a well built wheel with 32 lighter spokes and Alu nipples for minimal (if any) extra cost, greater durability and lighter weight.
Plus factory built wheels never offer the same value as handbuilts (despite the Hope Hoops above having all parts that are available aftermarket).
What is your budget? What riding do you do? What is “light”?
Based on the wheels you already have I would suggest:
Stans Alpine rims
DT Supercomp spokes (heavier but sturdier) or DT Revolution (lighter but potentially harder to hold tension
Alu Nipples
Stans ZTR hubs (light, perhaps unknown durability) or Hope Pro II hubs (heavy, UK for parts, mine haven’t been reliable)
Stans Alpine, No Tubes Hubs, Revolution spokes are 1372g for £360 on JRA.
Stans Crest, No Tubes Hubs, Butted spokes are 1420g for £385.
Just 2 examples but getting in touch with JRA or Clee will be able to find the right wheel for you. As I said, I would much prefer to go down this route for value rather than buy factory wheels.
Hope this helps, DanW