Micro SD card 256GB for Nintendo Switch[Compatible with Nintendo Switch] NSW-086 | eBay
Nintendo Switch Lite, Turquoise With SanDisk 256GB UHS-I microSDXC Memory Card HDHSBAZAA C
SanDisk 256GB microSDXC UHS-I Memory Card for Nintendo Switch SDSQXAO-256G-ANCZN - Best Buy
SanDisk 256GB MicroSDXC card for Nintendo Switch SDSQXAO-256G-GNCZN, Mobile Phones & Gadgets, Mobile & Gadget Accessories, Memory & SD Cards on Carousell
Add 256GB of microSD Storage to Your Nintendo Switch for Just $38.99
SanDisk Nintendo Switch - Flash memory card - 256 GB - Video Class V30 / UHS-I U3 - microSDXC UHS-I - for Nintendo Switch - Walmart.com
SanDisk 256GB microSDXC Card for the Nintendo Switch, 2-pack | Costco
SanDisk 256GB microSDXC Flash Card for Nintendo Switch - Newegg.com
256GB Emmc nand verified working [link to guide in comments] : r/SwitchHaxing