When you have two (or more) "identical" packages of the same SKU and manufacturer, but different models only the first package is evaluated.

[Fush83]

https://github.com/SCConfigMgr/ConfigMgr/blob/3308360ebc949e296110d63e98a31481f08cdadb/Operating%20System%20Deployment/Drivers/Invoke-CMApplyDriverPackage.ps1#L877

The script does not go and check the other packages for a match.

For example if I have the following two packages that have identical SKU
BIOS Update - Hewlett-Packard EliteBook 840 G5 Notebook PC
BIOS Update - Hewlett-Packard EliteBook 850 G5 Notebook PC

The script only tries to match the first package (in reverse order) with the model name, but stops.

[NickolajA]

I'm not sure what you mean, cause you're referencing the Invoke-CMApplyDriverPackage.ps1 script and talking about BIOS Update packages. Could you be a bit more specific?