Yeah Caps Lock and Scroll Lock are keys that doesn't require stabilizers.
As for iOne, they use a "Costar-like" stabilizers that's actually not the same but very similar though

And people are right about CM Storm Trigger not having the technology for it before so they used Cherry stabilizers, but all the new ones should be on Costar stabilizers.
Here are the list of keyboards that I think are backlit + Costar stabilizers.
Currently Available:Mionix Zibal 60 (MX Black only)
CM Storm Trigger (MX Brown and Red)
Available in the future:CM Storm QuickFire XTL (Backlit version of QuickFire XT which will come out in late April, so I'd image QuickFire XTL will come out even later)
WASD V2 (White LED only, Coming soon)
Rosewill Helios RK-9200 (From the demo it looks like only green/red dual color so far, hopefully more color options will be available later such a blue/white)