Davide Groppi
Interesting thin-strip wire lighting and other low profile lights (A moon light).
Lighting
Kreon
Modern and interesting lighting. I love the cloud pendant. Perfect for a spa. https://www.bimobject.com/en-us/kreon
Signify
ERCO
Technical lighting. Some very nice track lighting. Lots of clicks to get to downloads, but everything is available.
PROLICHT
Really fantastic track, linear, downlighting, etc. All configurable.
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FLOS
Find their 2D/3D files here: https://professional.flos.com/en/global/product-downloads/planning-aids/ - a few of their non-decorative lights can be found in Revit on Archiproducts
Louis Poulsen
One of my favourite go-to's for decorative lighting. Generous revit files.
LucePlan
Nice catalogue of decorative lighting.
Koncept
Tom Dixon Lighting
Philips