Not so much.
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone pg 242 MM.
Multiclassing is actually rarer than it seems. Maybe around 20%, let's say? So, naturally, while we'll see some skewing, it's not to a large extent.
But you missed the point. This thread is a spin off of the original table on D&D Beyond's characters, which shows a VERY huge preference for human fighters, by a wide margin. While there is some distortion due to multiclassing, I don't think its common enough to distort such a lead.It is, but...
The poll allows multiple choices, so the total should be much higher than 100%.Is it just my computer, or are the % numbers all wonky for everyone else too? I rounded down to the nearest 5, and still got a total of 140%.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.