The Evil Mad Scientist kits are a great way to learn what's inside it. They are faithful replicas of the internal 555 circuitry, built with discrete transistors and resistors.
You mentioned only ten functional components inside it, but if you look at individual transistors and resistors, there are quite a few more.
'10' would be counting the comparator and 2 op-amps as 3 components, the replicas you're pointing at break those out to discretes too, because once you've started down that road, why wouldn't you?
You mentioned only ten functional components inside it, but if you look at individual transistors and resistors, there are quite a few more.
Here is the through-hole component version:
https://shop.evilmadscientist.com/productsmenu/652
And a surface mount device version:
https://shop.evilmadscientist.com/productsmenu/922
I built the through-hole version, and it worked the first time I wired up a circuit around it.
Highly recommended!