I'd say before Rainforest, Croc Drop and Shipwreck Coast, you are correct.
We've had in the couple of years before Jumanji, there was a number of new and replacement rides that opened.
- 2020: Rainforest with Jungle Rangers (like for like replacement rather than retheme for Toadie's Crazy Cars) and River Rafts (Mini Flume relocated from Weymouth)
- 2021: Blue Barnacle (like for like replacement for Black Buccaneer) and Croc Drop (replacement for Ramases Revenge)
- 2022: Shipwreck Coast with Barrel Bail Out (Brand New Zamperla Watermania) and Trawler Trouble (Relocated Rocking Tug from Thorpe Park)
Chessington has been investing a lot compared to other Merlin parks since 2020 with the period between 2020-2022 being three additional rides and three replacements for older rides.
Just read the brackets and I think only Barrel Bail Out, Blue Barnacle, Jungle Rangers and Croc Drop fits in that category of brand new. River Rafts and Trawler Trouble are recycled from other Merlin parks.