So if a single unit of Tandemaus and Maushold have one assigned gender, that means, gay mice!HOME Ver. 3.0.0 contains several Pokémon renders that are just Eggs with text, which belong to the following:
• Another form of Spidops
• Tandemaus and Maushold if they were not gender unknown
• All of the ride forms of Koraidon/Miraidon
Happy pride month everybody!
Edit: To be a bit more on topic, I would lean on these being leftover data from early in development.