Plug read, opinions needed

Provided the cap looks good then you’ve got the ignition covered.
I’m afraid we might be overthinking this whole deal. It’s a big block Chevy. Then I looked at the pictures, because isn’t this an asymmetrical intake port engine with the long and short intake ports that require weird intake tracts like calliope injection? Aren’t these engines known for needing the carburetor jetting staggered to get consistent plug readings?
The cap and the rotor look excellent. There was zero misfires. At one point we had it so rich (9:1) that it fuel misfired but that was very early on, like pull number 2. We moved the O2s all over watching afr throughout the day. There was no staggered jetting needed. The boost tends to make the fuel curve very nice and has the same effect on the distribution. Overthinking makes it seem like I am worried about it. I should have explained earlier that I am absolutely thrilled with how this engine performed. It’s just a weird anomaly that I’ve not experienced yet, and I walk around the pits asking guys if I can look at their plugs. It intrigues me. I was seriously hoping (and still am) that someone comes in here and says “hey I’ve seen that and this is what I think it is”.