These are all released official special edition Joy-Con variants. Most were only available as part of Nintendo Switch Console bundles, except where
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Nintendo Switch – OLED Model Pokémon Scarlet & Violet Edition
Now with a larger 7-inch OLED display, the Nintendo Switch OLED Model system can provide a more immersive handheld gaming experience than its predecessor. In addition to the larger screen size, the OLED display provides vivid colors and crisp contrast in HD 1280 x 720 resolution. You can also play it in tabletop mode, thanks to its wide adjustable stand. There is also enhanced audio for both handheld and tabletop play.
Nintendo Switch OLED - White