Each microarchitecture appears to fully specify all core parameters, it feels likely that they just reuse most of all of the RTL, or even pre-synthesize core blobs.
Bibliography:
- www.quantamagazine.org/how-smell-guides-our-inner-world-20250703/ How Smell Guides Our Inner World (2025)
Will we ever fully understand the brain? by 
Ciro Santilli 37 Updated 2025-07-14 +Created 2025-07-11
Ciro Santilli 37 Updated 2025-07-14 +Created 2025-07-11- journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1005268 Could a Neuroscientist Understand a Microprocessor? by Jonas and Kording (2017)
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