I do not have any cabinet lock key blanks. I think I found a blank for the VF-xxx keys, National Cabinet Lock D8777. Not having cut keys nor blanks in hand, I can't be 100% sure though. An Ilco 1527 may also work and be more readily available.
So I see 4 different blanks needed depending on the code.
1. VF-xxx - D8777 or 1527
2. CxxxA - RO15 or N1069N
3. Fxxx - 110 or IL1 or 1041H or IL1
4. most other codes - Y11 or IN8 or 1502 or CG16 or ES8 or 1041T or L1054B or RO1 or RO10
Not to be 'Mr Negative', I like the idea but,
1. If every possible code is not included in the 'set', it still may not have the key you need for your locks.
2. Replaced locks, by previous owners, from who knows where, over the years throws another hurdle.
3. A lot of the code series have hundreds of possible codes which would be a lot of keys for a full set of known OEM key code series.
4. Shipping that many keys can add up in cost, and still no guarantee of having a key that fits.
5. Duplicating that many keys will also add up.
6. "A deposit for twice the cost of the duplicates ring (TBD) and postage" If the set is anywhere near complete, that can be an exorbitant amount. We are NOT looking @ $20 or $30 here.
I don't have a better idea, but without more information I don't see this project as economically viable.