I have an LED kitchen light but I don’t know the brand. I also have it on a dimmer and it does hum. I did get used to it because I only notice the hum, or lack thereof, when I shut it off. I know there are other options, but I’m too exhausted to contemplate a new one.

Not all dimmable LEDs are compatible. Lutron has a compatibility matrix

1. how can I research that to see what is compatible with my fixture?

Forgot the link...

https://www.lutron.com/en-US/Pages/LEDCompatibilityTool/Compatibility.aspx

Does the humming occur at all dimming levels? Several years ago, I got an IKEA LED fixture and it hums when the dimmer is "off", because off isn't really off.

It does not hum when it's off.

I tried the LED compatibility cited above. Not able to get results. It just says Lutron is not compatible with the Kichler but it's not saying which dimmer is.

Might switch to an ELV dimmer...

https://blog.recessedlighting.com/led-buzzing/

Bada - Good call on the ELV dimmers! I didn't realize they existed but I understand the switching principles, being trailing-edge dimmers, they will prevent the high inrush currents that can cause noise.

Where can I get ELV dimmer? I have a Lutron maestro. Is ELV different?

Your local home improvement center though the Lutron one I see at HomeDepot is $119. Amazon has a bunch. I see a Lutron for ~$50 there.

https://www.amazon.com/s?k=elv+dimmer&ref=nb_sb_noss_2

Maestro appears to be a CL dimmer, not ELV

https://www.lutron.com/en-US/pages/supportCenter/support.aspx?productName=Maestro%20dimmer%20%26%20switch&SECTION=Documents

Mine did that when i had a non dimmable bulb in it once i switched it to dimmable it stopped

ELV dimmers are very expensive (example: Lutron Diva DVELV-300PH) and require a neutral wire.