To the right are four shrouded cars that Rimac describes as Bugatti Rimac collaborations due in the coming years. One appears to match the silhouette of the Bugatti Type 35, suggesting there might be a continuation model planned, possibly with electric power. There also appears to be a track model of some sort, as evidenced by the Le Mans prototype-style rear wing on one of the cars. It's possible that this model is the production Bolide track car, which Bugatti has promised for 2024.
A third model appears to be a new Bugatti hypercar, as evidenced by a signature horseshoe-shaped grille at the front. It's possible this is Bugatti Rimac's planned successor for the Chiron which is due to end production around 2024. There's also a fourth model, though the video changes to a new scene before the full silhouette can be revealed. Interestingly, none of the cars appears to be a crossover, suggesting that Bugatti Rimac will stick to sports cars.