1. Revocable trust accounts: These are trust accounts that can be modified or revoked by the grantor at any time during their lifetime. They are commonly used for estate planning purposes.

2. Irrevocable trust accounts: These are trust accounts that cannot be modified or revoked once they have been established. They are commonly used for asset protection and estate planning purposes.

3. Charitable trust accounts: These are trust accounts that are established for charitable purposes. They are commonly used by individuals and corporations to make charitable donations and receive tax benefits.

Trust accounts are a critical component of the financial industry, as they allow individuals and organizations to manage and protect their assets. They are subject to various laws and regulations, including those related to fiduciary duty, taxation, and reporting requirements.