The ones they are using the US for covid 19; at least the Moderna and Pfiser are mRNA, which is genetic manipulation and not traditional vaccines at all.
Right, however, immunologically they both stimulate a specific antibody response to an antigen. The classic vaccines contain an antigen, but the mRNA vaccines make the victims cells create the antigen. Either way it causes problems when the next wild virus shows up. The mRNA vaccines have other said effects, but the main one is bad enough to get the SARS-COV-1 vaccines pulled.