Jean first reconstructed her body after dying on the shuttle (explained in #125). Per the retcon the Phoenix Force creates a new body for Jean and transfers most of her mind and soul into it except for a spark left in the cocooned original body (Classic # 8).
In Bizarre Adventures, Jean rebuilds her and Sara’s bodies telekinetically as a way of transmuting them from Atlantean back to human.
Rachel did this same trick in an Uncanny Annual to restore Sue Storm and others back to human after being transformed into hounds.
Rachel also telekinically transformed herself into a dinosaur woman in Uncanny Reload.
Teen Jean was reduced to ash by the Phoenix Force, but was able to take control of the White Hot Room and force the Phoenix to restore her ( Jean Grey 10 and 11).
The Poisons took over Teen Jean destroying her body. Using her super tp/TK pink psychic form, Jean was able to overpower the poisons and reconstruct her body from stray genetic material (Poison storyline).
Betsy recently used a lot of soul energy (to amp her TK?) to reconstruct her British body (hunt for wolverine madripoor story).
There have been times in which Cable was able to transmute his techno organic parts to flesh (with the help of Jean and Hope but I think also on his own). One run where he was at his potential he could atomize bad guys or even transmute them into monsters. Nate Grey could phase through objects using his telekinesis.