Super Smash Bros Ultimate - Save Data for Nintendo Switch - No

You have to upload your save file via Nintendo Online service.

Super Smash Bros. Ultimate likely won't support cloud saves on the Nintendo Switch if the game finally includes an online ranking system

Super Smash Bros.™ Ultimate for Nintendo Switch - Nintendo Official Site

Best Nintendo Switch Deals: Grab a Switch Lite and Get a Free Game, Plus Up to $50 Off Accessories and More - CNET

How do you transfer your account to your new Nintendo Switch?

Super Smash Bros Ultimate 100% Perfect Save - The Independent Video Game Community

How to transfer save data from one Nintendo Switch system to another

Nintendo Switch™ - OLED Model: Super Smash Bros. Ultimate Bundle (Full Game Download + 3 Mo. Nintendo Switch Online Membership Included)

How to Delete Games on Your Nintendo Switch in 2 Ways

Super Smash Bros. Ultimate 100% Max Nintendo Switch

Last chance: Grab a Nintendo Switch OLED Super Smash Bros. bundle before Cyber Monday ends

Super Smash Bros Ultimate WILL Support Cloud Saves!

An Error Has Occurred” or “Automatic Backup and Download Are Not Currently Possible” Appears in the Save Data Cloud Screen, Support

Nintendo Switch Super Smash Bros Ultimate Edition Bundle

Ultimate Smasher] A Super Smash Bros. Ultimate Save Editor