It is entirely unimportant how Richard Dawkins is categorised, isn't it? Last I checked, the "pro-natalist" part isn't there for Dawkins, so how other things modify a pro-natalist stance don't connect to anything.
You're the one who chose to combine Musk and Dawkins in the same group here with "cultural christian", that's absolutely a straw man if this is what you're doing.
I mean, your own link up there has a sub-heading of "Everyone has their own definition".
Especially when you're replying to "he seems to clear favor white Christian people and himself especially" rather than "is a Christian". Queen Victoria wasn't a feminist, neither.
You are saying they are Christian in the same sense of being "cultural Christians" rather than actual Christians. if you say one is a Christian it follows that the other is a Christian.
The point is that given Musk is clearly not an actual Christian he cannot favour Christians "himself included".