Left to right:

Applejack x Discord- CJ
-AJ was the first mare from the mane 6 who became a child, even though she didnt really wanted to have CJ first since she and discord only had a -one night stand -
Still when she gave birth to CJ she couldn't resist in keeping her (AJ is married for 3 years with Caramel now)

Pinkie pie x Cheese santwich — Ashley, Li'l Cheese and Strawberry shortcake
-Ashley was pinkies first born child shortly after cheese and pinkie married they became there second daughter Li'l Cheese and 4 years ago they welcomed there third child Strawberry shortcake
(In my mane ng li'l cheese is a boy so I made him to a girl now)

Double diamond x Rarity- Jewelry, Tripple diamond and Edward
- Jewelry was there first born daughter 2 years after that rarity became her daughter Triple diamond tho in the age of 5 Triple didn't felt good in her body anymore and after a long disguise she became a gender swap, 4 year ago rarity became Edward her youngest child he learned fast that Trple once was a girl but he still doesn't understands it, thats why he mostly trys to keep his distance from Triple

Twilight x Flash — Star sign and Ghost flash
- Star sign is Twilights first born child he was a wish kid for a long time and sence he is such a perfect stallion he gets loved from everyone like his little brother Ghost flash tho what Star sign and flash doesnt know is that Twilight didn't became Ghost with Flash together..

Fluttershy x Big mac- Blossom and Honey sun
- (now in my second ng I changed some things, Discord and flutter shy never became close friends and Big Mac and Sugar bell never became a couple)
Blossom was born shortly after AJ became CJ Blossom always wanted to be the only child From Big Mac and Flutter shy but when Honey sun was born she couldn't resist in loving her.

Rainbow dash x Soarin- Rain storm, Li'l midnight and Storm rain
- Rainbow became her child after all the others did she never really wanted to be a mother but when she became l'il midnight she changed and became a awesome mother 5 years later rainbow became her twins Rain storm (boy) and storm rain (girl) they both are very similar to rainbow when she was young unless like li'l midnight who is pretty slefish but still cares a lot for others and puts them in front of her.

Bases by selenaede and shiibases