Thank you @homercide for the information 
Just two comments:
As mentionned here by Michael, AES-NI is not related to entropy but to encryption.
The second point is related to external HWRNG like TrueRNG3: I’ve read somewhere in this forum or in the blog that it was not recommended but I cannot find the page anymore… So I would not mention it yet 
I’ll add the info about boot time (proposed by @anon42188109 as well) and about the certificate creation time.