For account types (and other lists like activity type, etc) there are some choices I am not able to delete. I'd love for that not to be the case so for account types every account type available and shown to us are the ones applicable to us. I am never going to call an account type brokerage or cash & equivalents because I use type as registration type and those two aren't mutually exclusive. That list in particular is cluttered up with 50+ undeletable fields of which I'd only keep 15.