There's very little of the original rare left, this was a stupid idea even 5 years after the sale as it was clear the studio was either bleeding it's talent or those that remained were ground into the floor of creativity as they were forced to create Kinect avatars and the. Sea of thieves (not a fan and tried several times over the years to get into it)
So in 2025 the only useful thing left of rare would be their ip, which is a different subject, but again nothing that Nintendo needs, though they would make better use of it than Microsoft ever have