I have VdB, PN, and large Negronne. Negronne is about a year behind the other 2. All three leaves are almost identical but the Negronne leaves are huge. The PN and VDB have put out main crop and look close. But the PN fruit are much larger at this point even though they formed at the same time.
My Negronne is a slow grower as well.
My VdB is from EL and has no visible signs of FMV.
My PN ( which I'm not sure is true) is from Raintree. Same on the FMV.