So, I’m going to go a little slow with introducing my Next Gens! So I’ll introduce the ships, and introduce their kids, then move on to the next ship. I’m not sure how long this will take, so I may speed it up at some points.  
For the first ship, it’s TempestTwi! I haven’t even watched the movie yet, to be honest. I just love the dynamic we see between these two in fanart, and I can’t resist shipping these two!
 
I imagine Tempest would feel at ease with Twilight, who was one of the first to show her true compassion and friendship in years, and would be extremely thankful for her. After years of traveling and trying to undo the damage the Storm King caused, she would settle down in Ponyville to meet up with Twi again totally not because of her crush why would you think that?!  
Twilight would be super excited to meet an old friend and would recommend Tempest sign up for the guard. Tempest would take that advice to heart and go to Canterlot, eventually becoming lonely. This didn’t go unnoticed by Celestia, who, after talking to Tempest (it took a while for this to happen. Tempest didn’t really think Celestia liked her, and was pretty closed off to her) assigned her to be Twilight’s personal guard. Twilight was kind of confused as to why Celestia would do this, but was excited to have a friend by her side at least, instead of some random guard.  
Tempest would open up to Twilight about a lot of things, but never about her crush. It didn’t take long for Twilight to realize she was hiding something, and became determined to figure out Tempest’s secret. After some pestering on Twi’s part, Tempest eventually let it slip, and began to panic. Twilight felt guilty for pestering Tempest and comforted her, realizing that she was developing feelings for Tempest as well.  
The two dated in secret for a bit, buuut eventually rumors spread. They announced that they were in a relationship to the public, but not before telling their friends, who were all happy for them (especially Grubber, he shipped it since the beginning!) A few years later, there was a small wedding and Twi and Tempest settled down. They eventually had foals as well. But one day, Twilight was called to the north. When she came back… she was expecting another foal.
 
Fun Facts:- Twilight calls Tempest Fizzy