The games are being datamined so we should soon know everything. I was searching through the reddit topics and 4chan but I couldnt find the answers to few things that I would want to know. I dont mind any kind of spoilers.

Does anyone know:

1.Are Luunala/Solgaleo UBs ?
2.Do UBs exist in the Pokedex and do they have their own numbers ? (Because I still dont know if we can consider them as Pokemon officially).
3.Are Luunala/Solgaleo a branch evolution that starts from Cosmog ? If yes - under what conditions the evolution takes place.
4.Do we know the Pokedex entry for Marshadow ? Whats its role in Pokemon Universe ?
5.Do we have the full national Pokedex with numbers and names to see somewhere ?
6.And finally: Are UBs connected somehow to the human characters they resemble - if yes - why they resemble them.

Thanks in advance for the answers!