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We could still roll out billions of dollars of LED light but conservatively choose LEDs with a warm spectrum. Yellow LEDs exist.

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Yes, this is my preferred approach.

Although, care must be taken, as many nominally warm LED's still have a huge amount of blue emissions. For example every Philips colored LED bulb, including red and orange, have a big spike of blue. The only exception is the yellow bulb, which is sold as a bug bulb... In other words, the engineers only chose to control the blue emissions in the one bulb; everything else is default full of blue.

Same thoughts exactly, I have a LED lamp which allows me to adjust the color, all the way down to a dark red (insanely warm) glow, in which it’s hard to red certain printed texts. Not sure when LED became blue light only?

Helps me sleep incredibly well and it’s an LED.

LEDs put out a lot of blue because most of them are based on phosphorescence, and high energy light (blue or ultraviolet) is required to drive the phosphors. It's possible to make a white LED without phosphors by combining different colored LEDs, but they're not as bright and much more expensive. That's also how you make them color adjustable.

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