Not sure how new they are but thought it worth sharing. While looking into HI-RES Audio I came across stations that broadcast in Flac.

Download App for Radio Paradise Ad free and you can cast to a Chromcast Audio. Also tried VLC streaming Flac stations including a kiwi station 'The Cheese'.

Here is a page that talks about this https://www.hiresaudio.online/cd-quality-internet-radio/