Iron Bars from Vanilla
Grass Door from Inspirations works fine
Doors from Malisis Doors
Bars, Grass and Frames from Better Nether
Bamboo Door from GrowthCraft
Windows from Dark Roleplay Medieval
Windows, Wooden Bar and Indian Frame from Millenaire
Doors from Natura

Huh, I missed iron bars somehow...those will be fixed next update

Modded blocks will be more of a pain to solve in a "correct" way though. No ETA

Notes to self:
1st filter: t/f blockstate filter config
2nd filter: t/f block filter config
3rd filter: t/f material filter config

Just uploaded a version of Dynamic Stealth / Fantastic Lib that allow you to customize "see-through" blocks via config.
It's in the Fantastic Lib config, not the DS config (because the library is actually the one doing the raytraces)

Only a year+ later XD