I had the displeasure of planning for the cuts concurrent with future headcount growth twice. BCG will design the new organization charts per whatever organization structure is the new hotness, there will be a big production about how you re-apply for jobs, but 95% is pre determined in advance including who is cut, with the remaining 5% give or take allowing for moving the special people in the WASP / DEI club around to a "development" role.
For those of you who get let go, congrats! Just remember if you are managing people post Chevron to ask yourself, "What would a CVX manager do/say in this situation?" Then do the opposite, and you'll be admired by co-workers, praised by owners, and sought out by industry peers in no time.