I just wanted to be popular too and I did this. I'll maybe be updating it until I get all ships that are/have been cannon on my NextGen.
1. Applejack and Caramel: I don't have many ships with Applejack to be honest, RariJack is probably my second fave ship for her, if I didn't like Sparity so much that would probably be cannon by now jaja. Anyways, I tried to make my own vision of Caramel, since he's a background character that leaves me a bit of freedom to do whatever I want with him. I decided to make him smol, cute and really femenine, just because it fits how I see him on my head tbh. They are definitely on love with each other, eventhough Juan was a surprise for them and their first idea wasn't to have any child or even get married anytime, they worked hard to make it works, and it did!! They got married and after that Anne was born. Probably their love doesn't leave much space for them to notice how are things going on their own family.
2. Soarin and Rainbow Dash: one of my faves tbh I like to think Soarin always had a silly puppy crush on Rainbow, while she was more the kind of "yeah daddy gimme the D". Rainbow was the one asking him on a date, and they have been inseparable since then. Eventhough Rainbow was never a fan of public samples of love, when she got pregnant she also got more cuddle-ly. Soarin was pleased of course. They spend most of the day together, but when they are separated, Soarin makes sure to take a picture of his precious wife as soon as she gets up just so he can look at it anytime. Also it bothers Rainbow what makes her look even cuter. There has always been a lot of sexual tension between them, and everypony was like "sha la la la la kiss da girl/boy".
3. Scootaloo and Featherweight: you know those classmates that you see and say "they would never be together, I won't live long enough", well, they are those classmates. Anypony would ever believe they would fall in love, but they did. Somehow they managed to coincide sometimes and Featherweight began to see something in Scoots nopony else did, so one of those days he asked her to go on a date. Half trying not to be rude, half taking it as a joke and another half not been able to say no to his stupid cute face, she accepted. She laughted thinking on his poor atemps to win over her. Before Scoots noticed she was laughting at their fourth date and his face stopped looking stupid anymore. Scootaloo is always yelling at him for kissing her check or hugging her in public, but she definitely loves it.
4. Pinkie Pie and Pokey Pierce: I had more options for Pinkie, Gilda, Trouble Shoes and, recentely, Prince Rutherford, between others, but I will always choose PokeyPie above all of them, I just love them so much. Even if I took Pokey away from his family, I love them together. Pokey always found funny Pinkie's character and he'd definitely change his confortable life to marry her. Pokey was born in Canterlot as one of Stars Swirl's legitimate decendents, but abandoned everything for her. For Pinkie, Pokey was not more than another lovely friend, but she found herself in love of him one day when she was comfy on her bed. Life was a party for both of them, even when they saw themselves with three kids at once. They make eachother laught and they spare love for the other one. Pinkie still waits to see her husband again, and so does Pokey.
5. Ivory and Rarity: This is one of those that has been canon, but not any longer. They met in a pub on Crystal Empire, Ivory knew who was she, he knew how to win over her, and so he did. Rarity saw herself in love of him that night. Eventhough nothing happened that night, he was determinated to finish the work, and she knew it was going to happen. Rares doesn't want to admit it now, but she was truly in love with him, she saw themselves dating, she saw themselves getting married, having kids and aging together, actually, like on her other relationships. Rarity's such a dreamer with romantic relationships. Ivory had other plans though, but he had to leave before making sure the job there was done. Rarity found herself alone, with a broken heart, two kids and another one in coming. The only good thing left of that relationship, is Tony, and Rarity makes sure he knows it everyday.