So appearently with homebrew on Nintendo switch + dump of Checkpoint savedata, you can install custom texture packs and mods, and even enable hidden settings like pocket ui and screen safe zone :
How to Install Homebrew Launcher on Nintendo Switch firmware 3.0.0
Homebrew App Store for Switch - Install Homebrew without Removing SD - CFWaifu
How to install HomeBrew Menu 2.0 on Switch 3.0.0 firmware - YouTube
How to Homebrew Your Nintendo Switch 5.0.2 - YouTube
nx-python: Create Python Homebrew for the Switch! | GBAtemp.net - The Independent Video Game Community
Homebrew App Store for Switch - Install Homebrew without Removing SD - CFWaifu
How to install Atmosphère CFW, Hekate, and Homebrew | Switch 16.0 Mod TUTORIAL - YouTube
How to Install the Homebrew Channel on the Wii U (with Pictures)
How to Install Homebrew Launcher/Appstore + Emulators Nintendo Switch (Hack/Jailbreak ALL FIRMWARES) - YouTube
Switch Homebrew Menu – WiiDatabase
The Ultimate Guide to running homebrew on the Nintendo Switch - YouTube
Homebrew App Store for Switch - Install Homebrew without Removing SD - CFWaifu
Install Homebrew & Emulators right on the Nintendo Switch home Menu - Hackinformer