A couple of questions about Ramayana

Can anyone list of all of the warriors in Ravan's army because its wildly different in different versions , also include Kumbkaran's sons ( if he had any because I cant any info on them) also considering Ravana is like generations older than Ram ,why doesnt he have any grandsons who take part in the fight ? In yudh Kand , akaik Ram mentions many times that he would commit s\*cide If Lakshaman is dead because whats the point , but in Uttar Kand he willing to live without Sita ( unhappy but not the point), doesnt this lend credibility to the claim that its a latter addition . Lastly since Ramayana takes place every cycle are there any differnces or its the exact same everytime ? I mean loads of them get uplifted every cycle so its different "souls" every time , hard to see it always being the same. If all devas change every Yug what happens to the previous ones ? akaik the Indra who is father of Vali isnt the one who is father of Arjun ? thanks a lot in advance