Do I have a growing account? Like long-term savings? Yes. It's used for out of cycle purchases. For now I don't regularly pay it, but soon I will be funding it with a regular payment out of "tank". I have a separate account for investments too - good idea to keep crypto separate for security reasons, but ymmv on paranoia.
Not sure what you mean by parole or interest/balance. If you mean account type, I think you have to decide based on usage patterns and bank fees. If there's an account that pays interest monthly but let's you have 2-3 transactions outwards per month then that's ideal for tank. But, I'd start with general accounts then review it in 3 months.