This year membership of the Commons select committees is being determined, not by appointment by the whips, but by secret ballots within each party. The results from the Conservative and Labour Parties are available here.
The results of the elections for Chairs of committees are available here.
These elections are the result of reforms adopted after the "Rebuilding the House" proposed a number of changes to rebalance power towards MPs from government. A summary of reforms is available in a House of Commons Library Standard Note available here. The results of the Liberal Democrat votes are expected early next week.