Mine are not meticulous by those standards

and a bit different with regards to information recorded, but nonetheless I do try to keep records of all my plants in a library of sorts; sample "page" below. I happen to use plain ol' PowerPoint, as I was used to doing this at my old job (nursery buyer) to create all of the plant information signs to print and post on the sales floor; it was a simple way of creating a database that didn't involve specialized hort-industry programs and could be created/amended/adjusted on basically any computer. I kept the half-sheet format simply because it was already set up that way, and if I were to ever want to print it, entries would be a decent size (mainly with regards to any photos) and yet save some paper. Anyway, I just duplicate slides when I need to add a plant and then just change the categories and data as needed and add the appropriate picture (usually from the web until I have some I can take myself). My ~250-plant menagerie is large enough that I recently split the main file into several, so I could keep large groups (orchids, bromeliads, etc.) in their own files for faster scrolling. I perhaps should record things like occasions of bloom, repots/re-mounts, vendor, etc., but I haven't. My main initial goal was to keep track of orchid temperature preferences, light requirements, and approximate mature size so when I want to use them in a terrarium or somewhere I will have an idea of what fits well when it's full-grown. For now, the plants I have in terraria are very much in the minority, with most being grown essentially as houseplants, just under lights and with humidity trays. I do have a separate Excel file that I use for a bare-bones list of all the plants, also sorted by category, in case I need to take it with me for reference. (Mainly so I can make sure I remember which orchids or tillandsia I actually have versus those I've had my eye on so often that I forget I don't actually have them yet.

For now, though, watering in that room every day helps me to remember basically all of what's in "inventory" without needing to consult the list.)
I've used/created and appreciate spreadsheet databases too, but find that I prefer the visuals of the virtual index cards, especially to remind me of what a mature (or blooming) plant will look like someday. Plants that I kill and hope to try growing again soon I keep in the database and just change the heading text to red or gray, though occasionally I move that slide into another file of "wish list" stuff when it might be awhile before I find it available again.
I've recently been good, so far, about jotting-down when I fertilize, to help me keep up with it since I usually woefully under-feed. I just use a spare 12-month calendar (when free ones show up in the mail from organizations, though they're easy to print too) and write something like "fert. orchids K-lite 1/2 t/g" or "fert. Tillies" on the day I feed. That way, it's easier to remember when they're due and I don't put it off. Hmm...which reminds me...time to fert. the terraria again. (I have no animals so I'm sure I under-nourish them too.)
Editing to add that I do kinda have bloom records for things, as I tend to take pictures each time an orchid or tilly blooms, so there's that.