Discord is genderfluid and bisexual, uses all pronouns including all neos, and is in a relationship with Fluttershy, Rarity, Pinkie Pie, Sunburst and Big Mac (and is Celestia's ex)
Luna is a genderdoe moon lesbian, uses they/she/moon/star pronouns and is in a relationship with Rarity, Twilight, Fluttershy, Applejack and Fleur De Lis
Fluttershy is a pansexual transfem demigirl who uses she/they pronouns and is in a relationship with Discord, Twilight, Rarity, Applejack, Luna, Rainbow Dash, Treehugger, Zecora and Queen Chrysalis
Fluttgirshy art credit unknown, it was submitted anonymously to derpibooru
Twilight Sparkle is intersex genderfluid and bisexual, uses all pronouns and is in a relationship with Rainbow Dash, Pinkie Pie, Rarity, Sunburst, Sunset Shimmer and Trixie Lulamoon
Queen Chrysalis is a transfem nonbinary lesbian who uses they/it/she/bug pronouns and is married to Princess Cadence and Glistening Blade (Shining Armor) and is dating Fluttershy and Pinkie Pie (exes with Celestia)
nonbinary flag is the honeyed nonbinary flag by cum_binary on Twitter
Pinkie Pie is a pansexual nonbinary who uses she/they/pop pronouns and is in a relationship with Cheese Sandwich, Fluttershy, Twilight, Rainbow Dash, Discord, Gilda and Queen Chrysalis
nonbinary flag is the honeyed nonbinary flag by cum_binary on Twitter
Rarity is bisexual and trans, uses she/her pronouns and is in a relationship with Applejack, Luna, Twilight, Fluttershy, Maud Pie, Fleur De Lis, and Fancy Pants