This question was submitted on 11th October 2020 to the Google My Business Help Community Forum.

Response:

Only Google can add new categories, so you will have to choose within the categories available. Google adds and removes categories every month so your category may be added at some time.

Tips to choose the right categories for your profile:

• Check your competitors for ideas
• You can get all available categories from here: https://pleper.com/index.php?do=tools&sdo=gmb_categories
• Check every month if the category you want has been added

Be remarkable!