Streamer's without built in DAC options?

I've tried many streamers: Lumin, Auralic, Naim, etc. I didn't like them. For me, the best option was this setup from small green computers:  sonicTransporter i5 (Gen 3) – Small Green Computer and  Signature Rendu SE optical Level II – Small Green Computer
Absolutely the best of all I tried.

Good luck!

How come no one mentioned the dCS network bridge?

it isn’t a streamer, you to stream to it, not from it

I also see many recommendations for streamers that aren’t Roon servers. assuming the OP wants a Roon server given he is using a Nucleus,

of course.. given the very vague stated needs, we don’t really know

It doesn't matter to me whether suggestions offered need or don't need the Nucleus in the system. I have it if needed. Or like the ZENith mkIII I can demo without it. So, suggestions are not limited to whether or not it needs the Nucleus in the chain. Its easily removed or put back

Auralic Aries G1 or G2, if you don’t need WiFi, then Aurrender N10 

You don't need a streamer, the Roon Nucleus is it.