Gains on brokerage account affect tax bracket?

Do gains on a brokerage account count as income and change your tax bracket?

“Non-qualified dividends” and short term capital gains you enjoy (buy selling a fund within a year for more than you paid for it) are added to your income and may impact your tax bracket.

Qualified dividends and long term capital gains you enjoy will be taxed at capital gains rates. I don’t believe they impact your income tax bracket, but they have their own tax bracket based on your income!