LordArchduke

Sure

He can change the name when he upgrades to a kingdom and I plan to hold a poll at the Patreon and Ko-fi for the new name.

Yes

There are many like this but imo this is the best one and more than 90 percent of this category is exactly like this but I remember someone said a good similar novel to this is called 'Global Lord: 100 percent drop rate' (use percentage symbol not the word but I wrote it as such because the app is glitched and the symbol gets hidden)

Sorry I don't use mtl so can't say what chapter this is

Generally that's for Patreon or Ko-fi members but since you have such high fan value, I'll do it. What name do you want me to use?

Sure - 全民城堡：开局随机唯一兵种天使

nuns and priests are both different troops