Taxation of dividends/CGs/interest arising in US for Indian citizen resident in India

An Indian citizen residing in India as a Resident and Ordinarily Resident (ROR) for tax purposes is seeking clarification on the tax implications of income earned in the US from their previous US bank and brokerage accounts, including an IRA. They need to understand the percentage of tax payable in both the US and India for interest income, dividends, and capital gains generated from these US-based investments.