A Link to the Past. Basically gave the Legend of Zelda its identity, so many staple mechanics, so much lore, comes from this game. First appearance of the Master Sword, the idea of Ganondorf as a king of thieves/sorcerer before becoming a pig monster, Kakariko village. The creation myth with the three golden goddesses came from here. In fact, there's a passage in the manual that basically reads like the design document for the next 30 years in the series, look it up. Gameplay is polished to a mirror shine, and it's amazing how it has lasted with the randomizer community.
Ocarina of Time. A sequel which referred to previous entries and expanded on the lore without shitting on it. Imagine that! It's amazing how right they got it as basically the first attempt of a game like this in 3D, even if controller technology had some evolving to do.
Breath of the Wild. While it does get a bit samey since there's only so many enemies to encounter, and exploring the world will result in finding shrines or koroks, the openness with which it approaches puzzles aka "just get to the goal, we don't care how." I find very refreshing compared to the previous "you're in a room with a lock and a key. Bet you can't find the only existing solution to this puzzle" dynamic the games increasingly had.

My bottom three:

Skyward Sword. The artwork is charming, the soundtrack has a few gems in it but is mostly short repetitive and annoying loops, a lot of the gameplay elements are just blatantly recycled from Twilight Princess. The mysterious floating girl who flies back a distance when Link approaches to lead him somewhere would have been more effective if the Zora Queen's shade hadn't done it a few years earlier, and I fully expected Fi to explain the collect the light fruit games by saying "Yes Master, 'this shit again'." Combine that with the frankly terrible motion controls crammed in as much as possible and the "Master, I have detected a 97.3333% chance that the man you just talked to said that he lives here in town" nature of it all...fuck this game.
Adventure of Link. Nintendo Hard via outright unfairness, not much story, not much lore, and rather meh graphics.
Tears of the Kingdom. Never before has a game been this much mile wide and inch deep. The story barely exists, there is more content in the Hudson & Rhondson's daughter storyline than in the main story quest. There are two different crafting mechanics added to the game, plus the one from Breath of the Wild, but none are really explored because there's no room, there's no time. In addition to the original map, there's the entire sky and the entire underground, both full of basically nothing. They could have gotten two games out of the concepts found in this one and explored the individual mechanics a lot more, but no. This game is a mile wide and an inch deep.