all 171 of them
Man + Man = Gay
Woman + Gay = Twink
Woman + Woman = Lesbian
Lesbian + Gay = Pansexual
Man + Woman = Bisexual
Bisexual + Bisexual = Multisexual
Multisexual + Pansexual = Multiromantic
Multiromantic + Multiromantic = Duoroflux
Multisexual + Multisexual = Non-binary
Non-binary + Non-binary = Ningender
Ningender + Man = Noninsexual
Noninsexual + Noninsexual = Ceterosexual
Man + Gay = Androsexual
Androsexual + Androsexual = Mingender
Gay + Mingender = Achillean
Achillean + Achillean = Nominsexual
Achillean + Mingender = Bigender
Bigender + Bigender = Biromantic
Lesbian + Biromantic = Biromantic Homosexual
Man + Achillean = Bear
Achillean + Nominsexual = Mascic
Mascic + Nominsexual = Polyamorous
Polyamorous + Bigender = Polysexual
Polysexual + Polysexual = Polyromantic
Polyamorous + Achillean = Pangender
Pangender + Pangender = Panromantic
Bisexual + Panromantic = Bisexual Panromantic
Bigender + Pangender = Trigender
Pangender + Mingender = Omnisexual
Omnisexual + Omnisexual = Omniromantic
Lesbian + Man = Butch
Lesbian + Woman = Fingender
Fingender + Woman = Femaric
Femaric + Femaric = Gynesexual
Femaric + Gynesexual = Nofinsexual
Nominsexual + Nofinsexual = Asexual
Asexual + Multisexual = Nonconforming
Nonconforming + Nonbinary = Uingender
Asexual + Asexual = Xenogender
Biromantic + Asexual = Biromantic Asexual
Asexual + Non-binary = Anonbinary
Anonbinary + Asexual = Agender
Agender + Agender = Neutrois
Neutrois + Neutrois = Apagender
Neutrois + Agender = Greygender
Greygender + Greygender = Cassgender
Cassgender + Neutrois = Agingender
Cassgender + Greygender = Apogender
Neutrois + Greygender = Libragender
Libragender + woman = Librafemme
Libragender + man = Libramasculine
Agender + Woman = Transfem
Agender + Man = Transmasc
Transfem + Transmasc = Demigender
Demigender + Demigender = Demifluid
Demigender + Multisexual = Transgender
Demigender + Man = Demiboy
Demigender + Woman = Demigirl
Demiboy + Demigirl = Paragender
Nonconforming + Demigender = Genderfluid
Genderfluid + Multisexual = Queer
Queer + Queer = Queerplatonic
Genderfluid + Genderfluid = Genderflux
Genderfluid + Genderflux = Genderfae
Genderfae + Genderflux = Genderfaun
Genderflux + Genderfaun = Genderflor
Genderfaun + Genderfae = Alexigender
Alexigender + Genderflux = Abrosexual
Genderfluid + Anonbinary = Aromantic
Aromantic + Demigender = Demiromantic
Bisexual + Demiromantic = Homoromantic
Asexual + Homoromantic = Asexual Homoromantic
Homoromantic + Bisexual = Homoromantic Bisexual
Demiromantic + Demiromantic = Lithromantic
Lithromantic + Demiromantic = Cupioromantic
Aromantic + Cupioromantic = Aroallo
Aroallo + lithromantic = Aroflux
Aroflux + Aroflux = Arospike
Arospike + Cupioromantic = Frayromantic
Demiromantic + Asexual = Demisexual
Demisexual + Demisexual = Graysexual
Demisexual + Graysexual = Grayromantic
Asexual + Grayromantic = Coeosexual
Grayromantic + Graysexual = Aroace
Aroace + Aroace = Orientedaroace
Demisexual + Aroace = Pomosexual
Pomosexual + Pomosexual = Reciprosexual
Reciprosexual + Asexual = Lithosexual
Reciprosexual + Aroace = Aceflux
Aceflux + Demisexual = Acespike
Pomosexual + Asexual = Freysexual
Freysexual + Reciprosexual = Inactsexual
Freysexual + Pomosexual = Fictosexual
Non-binary + Genderfluid = Androgyne
Androgyne + Non-binary = Intersex
Androgyne + Androgyne = Mogai
Androgyne + Mogai = Diamoric
Graysexual + Diamoric = Monoromantic
Multiromantic + Monoromantic = Aroaceflux
Aroace + Aroaceflux = Superflux
Superflux + Aroaceflux = Omniflux
Omniflux + Aroaceflux = Envyflux
Envyflux + Envyflux = Autoflux
Autoflux + Autoflux = Mutoflux
Duoroflux + Mutoflux = Idemflux
Superflux + Idemflux = Asemflux
Asemflux + Aroaceflux = Fluidflux
Diamoric + Diamoric = Trixic
Trixic + Trixic = Toric
Trixic + Toric = Enbian
Mogai + Diamoric = Mavierique
Mavierique + Diamoric = Twospirit
Twospirit + Twospirit = Hijra
Agender + Genderfluid = Questioning
Questioning + Questioning = Quoisexual
Quoisexual + Questioning = Quoiromantic
Questioning + Man = Heterosexual
Heterosexual + Homoromantic = Heterosexual Homoromantic
Heterosexual + Biromantic = Heterosexual Biromantic
Heterosexual + Heterosexual = Heteroromantic
Gay + Heteroromantic = Homosexual Heteroromantic
Heteroromantic + Bisexual = Heteroromantic Bisexual
Anonbinary + Questioning = Microlabel
Microlabel + Microlabel = Aegoromantic
Non-binary + Xenogender = Galactian
Galactian + Galactian = Neptunic
Neptunic + Galactian = Saturnic
Saturnic + Galactian = Terraric
Saturnic + Saturnic = Uranic
Saturnic + Uranic = Venusic
Venusic + Man = Marsic
Uranic + Venusic = Solaric
Solaric + Solaric = Solarian
Solaric + Solarian = Helian
Solarian + Helian = Stellarian
Stellarian + Solarian = Novarian
Uranic + Galactian = Aurorian
Aurorian + Galactian = Lunarian
Lunarian + Solarian = Eclipsian
Stellarian + Lunarian = Nebularian
Lunarian + Aurorian = Selenian
Galactian + Selenian = Artemian
Novarian + Nebularian = Penumbrian
Penumbrian + Stellarian = Phoenixian
Lunarian + Lunarian = Lunaric
Lunaric + Lunarian = Phoebian
Aurorian + Phoebian = Singularian
Singularian + Helian = Spacialian
Singularian + Spacialian = Universian
Spacialian + Solarian = Annulian
Annulian + Eclipsan = Galaxian
Spacialian + Lunarian = Meteorian
Spacialian + Stellarian = Siderealian
Demigender + Penumbrian = Duenixian
Demigender + Meteorian = Umbrian
Demigender + Spacialian = Atmosian
Demigender + Galaxian = Constellian
Demigender + Stellarian = Celestian
Demigender + Annulian = Daenixian
Demigender + Solarian = Dawnian
Demigender + Lunarian = Duskian
Demigender + Novarian = Solstian
Demigender + Nebularian = Equinoxian
Demigender + Phoenixian = Hafian
Xenogender + Xenogender = Aesthetigender
Aesthetigender + Aesthetigender = Genderfluff
Xenogender + Aesthetigender = Noungender
Aesthetigender + Noungender = Neurogender
Neurogender + Xenogender = Pocketgender
Comment found on LGBT Flags Merge!: All LGBTQ + Flag Combinations...
Biromantic+Asexual=Biromamtic Asexual
Biromantic+Lesbian=Biromantic Homosexual
Bisexual+Panromantic=Bisexual Panromantic
Omnisexual+Omnisexual=Omniromantic
Graysexual+Diamoric=Monoromantic
Polysexual+Polysexual=Polyromantic
Multiromantic+Monoromantic=Aroaceflux
Aroace+Aroaceflux=Superflux
Aroaceflux+Superflux=Omniflux
Aroaceflux+Omniflux=Envyflux
Envyflux+Envyflux=Autoflux
Autoflux+Autoflux=Mutoflux
Mutoflux+Autoflux=Idemflux
Superflux+Idemflux=Asenflux
Aroaceflux+Asenflux=Fluidflux
That should be all 171, just play the game in order from the top, and then use my first comment, and then this one.
Comment found on LGBT Flags Merge!: All LGBTQ + Flag Combinations...