The 'ears' can be added to many lenses, but as they are normally fixed in place by screws, the holes need to be drilled to attach the prong. Some lenses (even early AF lenses with aperture rings) have 'pilot holes', indentations in the right place to guide the drill, but not complete holes unless you have a lens that used to have the prong and it has been removed for some reason.
https://radojuva.com/en/2020/01/nikon-rabbit-ear/
John White is one technician who offers this service, a 'Type C' conversion:
http://aiconversions.com/PricesAndShipping.htm
Perhaps a prong could be glued in place with the right adhesive, but that would be a bodge job.
You could consider adding a second body for full compatibility with the lenses without prongs. This may well work out cheaper than having prongs added to a few lenses professionally. If you want it to work with all your lenses, you need to determine whether the lenses with prongs are 'pre-AI' or AI/AI-S:
https://vintagelens.nl/2018/02/19/differences-non-ai-ai-ais-nikon-mounts/
Most cameras made after Nikon switched to AI will only accept AI/AI-S lenses, and will be damaged if you attempt to mount a pre-AI lens. In the transition period, Nikon made a few cameras that can accept both types, like the original FM and FE (but not the FM2 or FE2). In these cameras, you can lock the AI follower tab out of the way, then mount a pre-AI lens, but you have to meter in stop-down mode. The F2 has alternative metering prisms designed for pre-AI and AI use; the AI versions have the same limitation as the FM/FE (stop-down metering only with pre-AI). Pre-AI lenses can still be converted to AI spec (see the John White link above), and this won't prevent you using them normally on pre-AI cameras, but it won't be as neat a job as when the official conversion kits were available from Nikon.
Incidentally, which lenses do you have without prongs? Nikon didn't make many manual focus lenses this way; most of them were entry-level 'E' lenses made for the EM and FG, and oddities like the 45mm f/2.8 made to match the FM3a. Even the AI lenses that were sold until quite recently kept the prongs.
