Also AAV, adeno-associated viruses . . . (but not preferable in a clinical setting/application usually, since they apparently can sometimes elicit immune responses and may contribute to the deaths of some patients historically in gene therapy trials https://www.nature.com/articles/s41587-020-0642-9 High-dose AAV gene therapy deaths, liver dysfunction, sepsis . . . )

Edit: I suspect that if we can use nanolipid particles as vectors, that may be more safe instead of AAV vectors.