Where can I find low-EMF lamps?
Any lamp that is grounded (where the power cord has a 3rd prong) will, by default, emit a much lower electric field compared to any lamp that is ungrounded.
Choosing the lightbulb is also a big EMF consideration. Most lamps these days would come with an LED that has the wrong color spectrum, and most of them flicker. I highly suggest getting a warmer color (2700k or below) incandescent lightbulb instead of the LEDs, unless you get a clean red or amber LED (Boncharge is a great brand).
Alternatively, there are new low-EMF lamps that are grounded, completely shielded and use very high quality, low-EMF lightbulbs. Example: The Jovial Lamp, by The Shielding Shop:
https://theshieldingshop.com/product/jovial-desk-lamp/ref/4503 (Coupon EMFGUY for 10% off)