With the international retirements of Ben Stokes and Mark Wood, 35-year-old seamer Crocombe, who has 125 wickets in 51 first-class matches, joined 39 other players to receive deals with the England team.
Only two other players who had full contracts last year have dropped off the list altogether: former Test opener Zak Crawley and left-arm seamer Luke Wood.
Tom Banton, Sam Cook, Emilio Gay, Matthew Fisher, Dan Lawrence and Ollie Robinson were the other players given one-year contracts after impressing England's management during the home season.
James Coles, Mason Crane, Josh Hull, Eddie Jack, Ben McKinney, Liam Patterson-White, Thomas Rew, Matthew Revis and Mitchell Stanley have received development contracts, which see the ECB take responsibility for half of a player's existing county salary.
England director of cricket Robe Key said: "It's been great to see these players committing to those contracts, knowing full well that if we pick them in Lions cricket, then we'll expect them to play in that."
England central contracts
Two-year contracts: Jofra Archer, Gus Atkinson, Sonny Baker, Jacob Bethell, Harry Brook, Jordan Cox, Henry Crocombe, Sam Curran, Will Jacks, Joe Root, Josh Tongue (to 30 September 2028)
One-year contracts: Rehan Ahmed, Tom Banton, Shoaib Bashir, Jos Buttler, Brydon Carse, Sam Cook, Liam Dawson, Ben Duckett, Matthew Fisher, Emilio Gay, Dan Lawrence, Saqib Mahmood, Jamie Overton, Ollie Pope, Matthew Potts, Adil Rashid, Ollie Robinson, Phil Salt, Jamie Smith (to 30 September 2027)
Development contracts: James Coles, Mason Crane, Josh Hull, Eddie Jack, Ben McKinney, Liam Patterson-White, Thomas Rew, Matthew Revis, Mitchell Stanley (to 30 September 2027)