Ok based off what I can tell, x in fact does feed your post to at least 10% of your followers, and a small % to the follower base of those who liked the post.
Before the recent x algo change, the reach one would get from the follow base of those who liked your post was greater; upwards of 20%-40%. feels more like 2-4% now. But i believe it's indicative to the amount of engagement that followers base engages with your post.
Meaning x will only increase reach, if those truly aligns with the post.
Logic seems sound. But it's dependent on those who truly align with your post engage with by liking or view details.
In conclusion, if you liked a post you saw on your feed. Like it.
I don't believe X will be a place to grow a new audience, unless those who you follow engage with your post. Not a complete or concise breakdown, but it's what i can see from the data that is available.
testing x algo, if you see this like it.
this is not bait i swear.