DAN!!! The last time I saw you we were with thousands of our closest friends in Obradoiro watching the Santiago fireworks. So good to see you here again.
I agree with Kinky that the Levante is a lot of pavement at the beginning (all of the first four days by my tally), and after that there is a fair amount of unpaved but gravelly agricultural tracks. But I loved it and it hooks up with the Vdlp/Sanabrés in Zamora. And the Sanabrés is excellent. But I was never there in winter.
I haven’t walked the Lana (Maggie’s blog is an obvious reference but she walked in spring), but it is high on my list. Alan Sykes has some recent posts from his late fall walk, so that might give you some idea.
And yes to the Mozárabe from Almería. There is a guide put out by the Amigos, updated monthly, and from Alemería to Granada, they will take care of you. (Link to November’s guide:
https://drive.google.com/file/d/1dMVIXVunE82lC-ON8x5o3ycAwL10g-TI/view
I have written to Verónica to ask her about winter walking, because I was there in spring. The Mozárabe skirts the Sierra nevada, so there is no high mountain walking. There is some stony riverbed walking, mainly at the beginning, but all in all it is a very lovely walk. Lots of albergues, which I assume will be open (members of the ASsociation will come open, or a local has the key, etc). And visits to Granada and Córdoba are icing on the cake.
I walked from Almería to Salamanca in 32 days, but I did some long days. Almería to Mérida would be very do-able, I would think.
I have also walked the Ebro, you can see my blog below this post in my signature. And more day by day stuff here:
https://www.caminodesantiago.me/community/threads/my-ruta-del-ebro-2016.42559/. No idea about winter accommodations, but generally on the caminos where you stay in pensiones, you don’t really have to worry since they will not likely be seasonal. The casa rural is another story, because I think many of them are not open year round.
But I am not a very reliable source, because frankly I have never met a Camino that I didn’t like!