All CX-5 interior LED kit will fit 2016 MY. I use this
9-pc Bright White LED Lights Interior Package from eBay because they use newer and brighter 5730 rectangular LED chips:
I did install license plate LEDs from the kit. They look nice with white color and aren't brighter than original 5W bulbs. I also used two "spare" bulbs for reverse lights. They look much better with white color but the light outputs are not stronger than original 18W 921 bulbs.
I used this
2800K "warm-white" Festoon 6641 3SMD LED for vanity mirror on the sun visors for "warm glow" effect:
Personally I'd like to find 29mm festoon LEDs to match the original bulb length but those are hard to find for cheap prices and it's more difficult to put in 4 or 6 LED cells for brighter light. With 31mm LEDs you have to bend some end and side clips a bit but it's doable and won't hurt anything. Also be aware the "prying tool" included in some Amazon or eBay kits is useless! It's too thick and sometimes you're better off by having two pries to pop open the light cover. I use this prying tool set from China with decent results: