A lot of my earliest gaming memories involve platformers so I love the genre. At this point in my life it might even be my favorite genre. I think it's one of the most accessible genres, everyone loves Mario and everyone loves Sonic (when the games are actually good). Hop n bop, or mascot platformers, whatever you choose to call them tend to be fun for everyone. These are games that appeal to all genders, ages, etc. and can usually be enjoyed with family. They're also the best games to play when you just want something to put you in a good mood. Mario and Sonic has finally broken the curse of bad video game movies too in the past few years, and were successful enough to remind us all of how big of an influence the platform genre has. These two giants of the genre are now making big bucks in Hollywood. I have issues with the Mario movie, but I LOVE the two Sonic movies though

I have to express my love for the Sly Cooper series, hoping it makes a come back one day, and the Ratchet and Clank series. Even though they have a lot of shooter gunplay there is still a heavy platformer element to the Ratchet and Clank series. I think the R and C games are maybe the biggest names in the genre currently, behind Mario and Sonic. Too bad the movie was a flop though.
In recent years, we gotten some other great games of this ilk that I think deserve recognition. Astro Bot Rescue Mission is fantastic, and I would recommend it to people regardless of whether or not they care about VR gaming. It's just a great platform game, and it could potentially convert you to VR. Rescue Mission is in my opinion a magical experience that you will remember for years. Its follow up Astro's Playroom on the PS 5 is slightly less impressive but still an excellent game too and doesn't require VR equipment to play. Astro's Playroom is also like a celebration of the Playstation brand with so many references to its entire history. I think that makes it a very special game. Honestly, Astro should be the Playstation mascot. You'd think he was if you played Astro's Playroom. Team Asobi is a development studio to keep an eye on in the future. Their games are special and for me personally, they are Sony's best first party studio but also the one you never hear about.
I think New Super Lucky's Tale is a great game too. It's a fun platformer with diverse levels and really charming and funny characters. I would tell anyone who plays it to actually take the time to talk to the NPCs and more than once too. There is a lot of great dialog there that a lot of players miss out on. What I also love is that this game does both 3d and 2d platforming really well.
And if we go all the way back to 2013, Puppeteer is an amazing game full of surprises. Like Astro Bot Rescue Mission it's kind of a magical game and truly one of a kind. You never know what to expect from level to level and it's so full of great secrets and easter eggs to find. It even has a light Mega Man element to it. Your character has different, interchangeable heads (cause he's a puppet) and sometimes coming to a boss fight with the right head equipped can dramatically change how the fight plays out. There's a narrator and a sidekick character who provide lots of commentary throughout the game to keep things interesting, and the whole game plays out like a stage play. The new princess Peach game coming out on the Switch this year has drawn comparisons to Puppeteer, so I think it's relevant to talk about now.
When it comes to metroidvanias, Castlevania: Symphony of the Night will always be on top for me. Symphony of the Night is STILL getting people's attention to this day. A Sega Genesis version is being worked on and I just saw a thread here about an upgraded version of the Saturn port. Bloodstained Ritual of the Moon is noteworthy as the unofficial continuation of the metroid style Castlevania games, even though the Switch port was a bit of a mess. That game was excellent and it spawned two great classic, linear style, Castlevania games in Curse of the Moon and Curse of the Moon 2. The second one gets really damn hard though with some long ass levels.
Infernax is a must play too for people who were disappointed with Castlevania II on the NES. It takes that game's formula and does it exceptionally well. It's got a little bit of Zelda II influence too I think.
I really love that Castlevania has successfully transitioned into multimedia with two animated shows on Netflix. The first series is excellent, with amazing animations and absolutely mind blowing action sequences. I hear the new series is great too.
The indie scene has pumped out so many good metroidvanias in recent years. Inti Creates has really made a name for themselves and I plan on playing their latest, Yohane the Parhelion Blaze, as soon as my Switch copy arrives. Some other greats ones that I love are the Guacamelee games which are such a perfect fusion of platformer and beat 'em up, Dust an Elysian Tail which has charming characters and amazing visuals and music all from a one man dev team, and Record of Lodoss War: Deedlit in Wonder Labyrinth which is a really nice budget sized Symphony of the Night clone for fans of the Lodoss War anime or books.
I love the ninja style hack n slash, or action platformers (again, whatever you want to call them) like Ninja Gaiden and Shinobi, and we have some great modern takes on those. I think the best is The Messenger and everyone needs to play that game. It is truly special. It's a great evolution of the NES Ninja Gaiden games. The platforming is deeper and more fun, and it has a world full of great characters and lore that the studio carried over into a successful turn based RPG called Sea of Stars.
I also love the Mega Man X series and wonder if those games will ever get resurrected. I think everyone who loves those games should check out Smelter, a great fusion of Mega Man X gameplay with Actraiser's RTS elements. It's especially worth checking out if you like the melee focused gameplay of Zero in the Mega Man X games. It also has a weird but compelling story featuring Adam and Eve of biblical fame.
Oh, and Kaze and the Wild Masks is a great game for fans of the Donkey Kong Country games on the SNES. I loved the first two DKC games on the SNES, never played the third one though
I could go on and on about platformers, it's a great genre with TONS of games.