So the “Old” definition vaccines are just the various whole virus vaccines.
The “New” definition vaccines can be Protein subunit. Recombinant. Conjugate. Viral Vector. mRNA. Those vaccines include Influenza B, Shingles, Pneumonia, Hepatitis B, and Covid vaccines.
The new ones produce immune response with just pieces of antigen rather than the entire virus. So there’s zero chance of infection, which sometimes has occurred with whole virus vaccination. So why exactly is the old vaccine technology better.
Do your own research.