Red LED with a peak at 631.2 nm.
Green LED with a peak at 506.5 nm.
Blue LED with a peak at 465.0 nm.
White LED with a peak at 448.1 nm accounting for the blue component and a more broad curve around 562 nm for its phosphor component.
A HeNe laser with a known wavelength of 632 nm. The peak was measured at 632.3 nm.
Fluorescent tri-phosphor (OTT LITE) light with several components. Peaks at 404.3, 435.6, 545.5, 576.4, and 610.8 nm.