Good to know this @oswaldkurten. If I ever get into a project such as you mention, I will consider it. I am currently in line with @reuvenm.
I did notice that Nikon’s bundled ViewNX 2 will allow me to select individual and/or multiple thumbnails and allow me to add quite an extensive list of metadata, some of those being from your selection of minimum info. However searching by some of this data is currently obscure to me - I cannot find a search function within the program.
Windows 10 File Explorer will allow me to select individual and/or multiple thumbnails and allow me to add some metadata: Tags, Title, Authors, Comments, Subject. And, I can search by those within File Explorer. Tags that I added using ViewNX2 are searchable on File Explorer but some of the other metadata is not.
I’ll further explore the freeware Adobe Bridge.
We do post a blog so maybe I should consider some attached metadata for that. iNaturalist adds my selected copyright to my images posted there. I retain the high resolution original in both cases if there ever is a copyright dispute.