Hi!
If you achieve it with static lighting like this, you’ll run into the same problem as with the emissive before: it won’t illuminate the dynamic objects!!
BUT it’s only with the default lightmass settings!! Since Unreal is working with lighting samples you CAN have as perfect lighting on dynamic objects as on the static ones!! You just have to lower the Volumetric Lightmap Detail Cell Size!!! It’s in cms and the default is 200, which is every 2 meters!!
With the lamp… Are you using 2 sided material for the opaque parts? Or do they have thickness or just made up of planes?