So with that said, the one on the right can be vdb but the one on the left looks to be too jagged around the edges, but that doesn't mean it's not possible.

My vdb put out single lobe leaves when it was less than 2 years old.
Now there are only long fingered leaves.
I believe it is just part of the plant maturing.
Doug

The one on the left is a tissue culture. The one in the right is typical VDB

I haven't seen leaves like the one on the left from my VdB type family of trees. The right yes.
I think until you get ripe fruit to judge from the one on the left all bets are off. Imo
I'm not saying it isn't, just saying it possibly isn't.

First two pictures are typical VDB. Next two are tissue culture.

Brianm,

Yours are probably 2 different strains. The left look like the Vista, which UCD confirmed was the same as a strain of "VDB" sourced from a reputable person which I nevertheless believe was mislabeled at some point and sold to many collectors as VDB. There is another strain called VDB that looks like the ones on the right, and may be the same fig as Nero 600M.  The "Vista/UCD genetically analyzed VDB", and the other VDB floating around are 2 different varieties.  I am unsure if there is a 3rd variety going by VDB; however, I do have a VDB that throws limbs with single-lobe grape like leaves and other limbs with the long fingers on them similar to the leaves on the right. I can give you cuttings from one of my "Vista" and from one of my other "VDB" that are not tissue cultures so you can see what I am talking about.  Hit me up trade season if you want to see how the "Vista" will look like the one on the left and the other will look like the one on the right. They are easy rooters. :)

I have tasted both and have not noticed a difference yet, but those were first year fruits. This will be year two for both.

Edit: Apparently Nero 600M also throws some of the single lobed stems so it is likely that it is the same as the non-vista VDB.  see thread: http://figs4funforum.websitetoolbox.com/post/nero-600m-7033563