From my point of view, after some 40 years of shooting, and as someone who's used a LOT of filters over the years for creative purposes, as well as "protective" reasoning, I say there are only two kinds of filters needed for anything in the digital age. They are:
1. A Circular Polarizer for cutting glare and making blue skies richer.
2. An assortment of Neutral Density Filters.
[*]Assortment of full frame or a variable density ND for daytime use to slow shutters for things like waterfalls, or to open apertures without overexposing, and that sort of thing.
[*]MAYBE Graduated NDs for balancing skies with foregrounds in situations where that will work. Flat horizons come to mind. But when vertical elements take up residence in both upper and lower halves of the composition, like people tend to do when they're the subject, say on a beach, or trees, or anything else, then it starts to fall apart as a method, when the top half of the person is dimmed down along with the sky, and the horizon line cuts through them along with the horizon and everything south of that line is brighter. For that reason, I usually just go with two shots instead of the graduated ND these days, and blend them in post production with a mask. But to each his own.
I used UV filters for nearly 30 years with film because UV was an actual issue with that medium. Digital cameras have a UV filter built in over the sensor already, so a UV filter over the lens does nothing. Salesman still sell them to noobs on the grounds that they "protect" the expensive lens, but that's never been proven to be the case. The thin, easily broken glass isn't meant to protect anything. Instead, there are stories of it shattering on impact and the shards scratching the expensive lens.
And even if it never gets broken, there's a very real issue of it degrading that expensive lens' image quality. We get lots of folks showing up here with example photos that have problems they want help figuring out the cause of, and a LOT of the time, it's the UV filter. They cause reflections, glare, flares, orbs, Newton rings, and so on. It's said that if you buy the really expensive name brand ones, they don't do it "as much". I've bought them and used them, and I'm here to tell you: It's a myth. They can cause all those same problems.
Some folks say stuff like, "but if you were on a beach in a sandstorm with sand whipping around like mad, it would protect your lens". Maybe that's true. But I've shot on beaches and in deserts with dust and sand blowing around, and my lenses show no scratches from shooting in those environments without "protection". And if a full blown sand storm with sand whipping around with the force to damage my gear were to ever actually blow up while I was shooting, I'd just put my camera away and head for shelter.
The only time I ever use a UV filter these days is when I'm shooting one of my old film cameras. I wouldn't put one on a lens parked on one of my digital cameras unless someone was paying me for the photos coming from that shoot and insisted on it.
As for the rest, the colored creative filters and so on, I never use any of those any more. All of that stuff is done in post production now, where infinite control of all aspects of color, hue, saturation, masking, contrast and more are far, FAR superior to the limitations involved with using creative filters like that on a lens at the time of shooting.
Just one guy's opinion/perspective, but that's my take on it.