And I think any person who is extremely Type A fits the 3/8 type description
ESFP's are usually too human to be 8s They bring out the 7 in me...
ENTP's are usually the mavericks, living completely in the intuitive present (they're always so relaxed and confident ), so more likely 7w8s, but 8 is possible too.
ESTP's are usually 3s, but they can be like 8s
All in all, every ExxP is very inspiring and that's the main strength of the 8.
Different inspiring than J's, but inspiring nonetheless.
So that's what they have in common.