Finally I am slowly getting rid of the completely failed lighting and shading of the Velen/Novigrad area (wrong colours, when it rains at high noon it is getting darker than at midnight etc.) and finally Witcher 3 is getting fully natural beautyful colour gradients and illumination quality.
Immersive Lighting Nudel Edition mod plus E32020-Reshade looks truly epic and brings the superb Toussaint quality and colour gradients to Velen and Novigrad
mod4KSoftClouds plus modHeavyCloudsV2 plus modVolumetricClouds_PLM_Patch (is for the Phoenix Lighting Mod but seems to work with the Immersive Lighting Nudel Edition flawless)
modHDTreeBillboards (for highest quality trees on maximum rendering distance)
mod4kGrassTextures
Halk-HoganPL`s modHDReworkedProject with extreme texture quality settings
modSupremeToExtreme graphics settings (that`s why I lowered the resolution, the supreme settings can get really hardware-hungry on my Vega11 around the Novigrad area *ggg)
I am slowly but steady getting to the point of the PERFECT Witcher 3 graphics quality. The illumination during thunderstorms and in interiors is still waaaaay to unrealistic dark with too intense black tone-mapping.