From experience, I don’t need a direct comparison (unfortunately I can’t show one either, as I don’t use amber LEDs for reasons other than as indicators in my car).
Amber simply has no real blue component. The data sheets show a very low blue component (especially with phosphor converted or PC Amber), but this is not at all sufficient to display colors even remotely naturally.
everything except orange/red is displayed incorrectly, down to gray, as if the saturation had been set to zero.
This is anything but comfortable for interior lighting, even if Amber nominally has a similar CCT. It’s more like the sodium vapor lamp light we know from streets and train stations…
Here is at least a comparison that shows the differences between a normal warm white 80 CRI LED (dedomt here) and a XP-E2 PC Amber LED. The warmwhite LED has more green and blue in it, which makes the difference in terms of color rendition.
So I cannot recommend any amber LED for something like ambient lighting indoor and outdoor. Just go with FFL351A 1800K and be happy. So far I know these LEDs are the only ones on the market which can deliver this beautiful light with such a high color rendition and quality.
Here you have the spectra of FFL351A 1800 K 95 CRI:
