An ally or straight ally is a cisgender, heterosexual/romantic, allosexual/romantic (cishet) individual who is not a part of the LGBTA+ community but supports the community. An ally acknowledges that LGBT people face discrimination and thus are socially disadvantaged, supports LGBT+ rights, and challenges homophobia, transphobia, etc.
Not everyone who meets this definition identifies specifically as an "ally". Not all cishet people are allies.
It is unknown when the term "ally" was first used, however it has been around seemingly since the post events of The Stonewall Riots.
Flag for non-LGBTQ+ Allies (Made by GammaRaul)
The straight ally flag was created sometime in the late 2000s, but the specific origin is unknown.
The Trans Ally flag was made by an unknown person, but has been adopted and used by Trans Advocacy groups such as MaineTransNet and SuitUpMaine.
The Bisexual Ally flag was made by by tumblr user ally-flag-compendium on December 13th, 2020.
The Aromantic Ally flag was made by tumblr user ally-flag-compendium on December 15th, 2020.
The Asexual Ally flag was made by tumblr user ally-flag-compendium on December 16th, 2020.
The original intersex ally flag was made by tumblr user ally-flag-compendium on December 17th, 2020.
The cisgender ally flag was created by Twitter user LJMLH2 on or before June 30th, 2021.
The xenogender ally flag was created January 8th, 2021, by wiki user ringotheman. It was made for non-xenic/non-xenogender people to show support for xenogender, xeno-aligned and xenic folks.
The polyamorous ally flag was created by William on January 21, 2021, as she noticed the lack of polyamorous support amongst many polyamorous people.
The PoC/tPoC ally flag was also created by William, in order for white cishets to show support to not only transgender and queer people, but support to POC and the struggles they go through. It was coined on January 22nd, 2021.
The Questioning Ally flag was made by tumblr user ally-flag-compendium on April 18th, 2021.
Alternate Intersex ally flags were made as The Chain Collective, who are bodily intersex, were uncomfortable with it due to the use of the straight flag implying that all intersex people were gay. The both flags were made by Rosie, at their request and FoxBanana's, respectively. It is unknown when these flags were made.