Other Income includes any taxable income for which there is not a specific line identified on Form 1040. This income is reported on Form 1040, Schedule 1. Examples include
Prizes and awards • Gambling winnings (including lotteries and raffles) • Cash for Keys • Jury duty pay • Alaska Permanent Fund dividends • Nonbusiness credit card debt cancellation.
Typically, "TP" stands for "Taxpayer.
For more detailed information, you can refer to this IRS resource: