Take a look at Juno sloped ceiling residential downlights. Juno offers a variety of sloped ceiling products such as the 46L Trim 4in Round Slope Ceiling Trim. Note that ordering is more complicated than just buying a Home Depot downlight because the LED housing and trim are sold separately. You must take care to specify the correct LED housing specs for your application. Electric Bargain Stores sells lots of Juno products but you can also find them on Amazon (I bought Juno trim there).
You can also just start your search for Slope Ceilng Trim at Electric Bargain Stores.
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