I'm trying to create a custom image for my work. The problem is that I need to include two languages. The preinstalled language is English (United Kingdom) as Windows display, Apps and websites, speech and keyboard as English (United Kingdom) with Swedish layout.
The problem arises when I try to add the Swedish language pack. It doesn't show up in "Preferred languages" in the settings app. I've tried to add Swedish before installing with DISM but I also tried to install it by pressing Ctrl+Shift+F3 after installing Windows to enter Audit mode. I have no clue what I'm doing wrong. Please help me :)

Trying to install Windows 10 Enterprise 22H2.