With the ancient feud between the Jedi and the Sith brought to a permanent end, Rey Skywalker will have a lot of work to do to rebuild the Jedi Order. Based on what I know about the current chain of events in canon, I believe I have an idea of how Rey will accomplish this. She already has a Jedi Temple to work with on Ahch-To and she has the sacred Jedi texts filled with knowledge she can pass onto her students. Since the Ahch-To Jedi Temple is where the Jedi first began, it only makes sense that it would be the place the Jedi would be reborn. Due to her status as Palpatine’s granddaughter, she has access to Force lightning. However, she can use this infamous dark side power without turning to the dark side. For now, she may be afraid of this power, but with enough years of training, she may be able to refine this ability so it can be a weapon of the light side of the Force. This will be similar to how the New Jedi Order made frequent use of Force lightning in Legends. Rey has a Temple, the texts, and the strength to resist the pull of the dark side.
The only thing she will need next are students to train. In both The Clone Wars and the Fallen Order video game, it was revealed that the Jedi Order created a list of Force-sensitive children that were potential recruits to the Jedi ranks. Unfortunately, the Jedi were destroyed by Order 66 before they had the chance to recruit these children. The list was ultimately destroyed at the end of Fallen Order and the children remained off the grid. Those children who evaded the Empire will likely be all grown up now and have children of their own. With the Sith permanently gone, these Force-sensitive individuals are no longer in danger.
I have an idea of some individuals who are not on the list of Force-sensitive children that Rey could recruit. In Rebels, Jedi Knight Kanan Jarrus and General Hera Syndulla had a son, Jacen Syndulla, who was born around the time the first Death Star was destroyed. By Rise of Skywalker, Jacen will be all grown up and have children of his own. Jacen was likely the pilot of the Ghost during the Battle of Exegol. If either Jacen or Jacen’s children are as strong in the Force as Kanan Jarrus, Rey could potentially recruit them into the new Jedi Order.
In the end of The Last Jedi, it was revealed that at least one of the children working in the stables is Force-sensitive. It was heavily foreshadowed that the child would grow up to be a Jedi. Perhaps he will cross paths with Rey and she ends up recruiting him.
Finally, there is the newly legendary Baby Yoda. Baby Yoda is very strong in the Force and is able to use powers such as telekinesis and Force healing without training. However, because he was still and toddler and had no prior training, using the Force takes a serious toll on his body. At 50 years old, Baby Yoda is a toddler by his species’ standards. If he is alive by the Rise of Skywalker, he will be 76 years old and still a toddler by his species’ standards. With the proper training, Baby Yoda would be a powerful addition to Rey’s Jedi Order.
Overall, Rey has no shortage of potential apprentices to choose from. The problem is finding them. The galaxy is vast so finding these would-be apprentices will be like finding a needle in a haystack if Rey attempts to find them on her own. Fortunately, with the help of her friends and the resources of the new galactic government at her disposal, Rey should be able to find enough students to rebuild the Jedi Order. I look forward to Rey’s quest to restore everything her grandfather destroyed. Hopefully, they will do either a television show or book series that details how Rey restores the Jedi Order.