What’s the ideal portfolio diversity

For new investors, what will you consider the "ideal" domain diversity or maybe we should say .com diversity.
Percentage of one word, brandables, 2 words, CVCVCV, CVCV, LLL, and the pattern continues.
What is the ideal mix that brings success?
This should help new domainers looking to build a great portfolio…."as they say never put all your eggs in one basket"
Ideas welcome from veteran domainers