Ally: A person who supports LGBTQ+ people. Also includes all cis people who are trans allies.
There are two flags for allies, the straight ally flag and the trans ally flag. Both feature black and white stripes symbolising heterosexuality and cisgender with the pride and trans flags in an upward-facing chevron symbolising the A for allies. Instead of calling them pride flags they are referred to as solidarity flags.
Alphabet Soup 