All the Switch games you can't back up to the cloud - Cloud saves for Nintendo Switch games were a long overdue addition b
Multiple Switch Games Including Pokémon, Splatoon, And Dark Souls Do Not Support Cloud Saves (Update: Nintendo Responds) - Game Informer
FAQ - Nintendo Switch - Nintendo - Official Site
Nintendo's Paid Cloud Game Save Service Won't Even Support All Games
Nintendo Switch checking for internet before boot, unable to check weather save data can be backuped
How to back up your Nintendo Switch save data to the cloud
How to Transfer Save Data From One Nintendo Switch to Another
Nintendo Switch Cloud Save Video Gets Hopes Up, But Is Apparently Debunked
Turns out not every game will support cloud saves on Switch – Destructoid
Nintendo Switch 's paid service 'Nintendo Switch Online' started late September, 2018, there are several games that do not correspond to cloud save - GIGAZINE
Some games will not support Switch Online's cloud-saving feature