FinTech mobile and customer account lists

I am looking for best practice recommendations on how to categorize and display customer accounts (DDAs) in selection lists. Considering active and inactive, internal and external, and giving customers control of what they see or want to hide from the list. Customers are complaining that the list of all their accounts is too long, and I’d like to improve that UX by giving them a list that can bucket the account types by category and then be able to control the show/hide of those categories. Have been considering using tabs, toggle switch, and section headers, but wondering if there are better or more elegant approaches out there.