Explaining the question more, I see some die pictures which are implementing a Cortex-M0, with Bluetooth LE and so on, depending on the chip functionality, and are appearing like this (nRF51822):
While on older CPUs I cannot see much digital "fuzzy" logic implementation, like this (AMD386):
After googling a bit, it seems that today's ARM implementations are made with standard cells (creating the amorphous shapes on the die). So I can say that the "fuzzy" implementation on the first picture is the Cortex itself.
I understand that all the regular shapes may be memories and all the "hand-drawn" parts are analog. So I wonder, in the past were the analog designers to implement the digital parts under the guide of digital guys who were defining the architecture?
What am I missing?