I nearly always use a chromatic scale with the default 4 semitones offset per row. I have all Cs lit green. It took me some time before I had the position of all notes internalized, but now I pretty much instantly “know” where a particular note is in relation to the green ones when improvising.
However, whenever I start playing chords I get easily confused. What helped me find the chord I want quickly was to think of chords in “shapes” across the rows. Almost like Tetris blocks. So I just made a quick drawing of how I visualize the variantions of major and minor chord shapes in case it helps others. With more complex chords I still have to stop and think for a while, but at least this lets me “get by” in a jam session or similar.
The green key is the root note of the chord. Low to high notes from left to right.