This...has basically been my whole day. Now I am aware the profiles for basically 90% of these ponies are NOT up yet...but I'll get to it.
For now, enjoy this colorful little diagram based on the pony family trees made by
Oh and, here's a list, starting from left to right on the top row of ponies, this will probably be updated as season 7 moves along btw.
Senior Ponies;Apple DumplingKazooieUncle OrangeAunt OrangeChief ThunderhoovesSpoiled RichFilthy RichCloudy QuartzIgneous Rock
Adult Ponies;Gabby GriffinBabs SeedSunflowerBraeburnLittle StrongheartDiamond TiaraPeppermint TwistOpen SkiesCherry JubileeMrs CheerileeBig MacintoshPipsqueakApple BloomBerry PieStrawberry LemonApplejackLimestone PieAurora BorealisSunshine SmilesMoonlight RavenHoney CrispGrape JuiceCherry PieSnowballTrixie LulamoonMaudalina Daisy PiePastel AuraOrange SliceMoondancerMarblestone PiePinkamena Diane PieCheese SandwichSubmarine Sandwich
Next Gen Ponies;GwydionGibbyAkandoSour PruneSour PlumSour CherryFlora MayApple CustardCoffee BeanLoco NutButter PecanBlueberry SurpriseDandelion LocksGinger NutmegMarshmallow RoseMidnight StarRhinestoneCheery CherryBelladonnaSerenityAlexandriteSunriseCotton PieFudge PieSugar Pie