In the regular cut, the voices are fine because The World Between Worlds has already been established but any pre-OT Jedi coming back as physical ghosts doesn’t fit with what we’ve seen (excluding Qui-Gon and possibly Ahsoka).

The four that we get are the main reflections of Palps, Yoda is his direct mirror, Obi-Wan is his opposite teacher of Anakin, Luke is his main OT drive in his desire to stamp out the Jedi, and Anakin is obvious.

Qui-Gon probably wouldn’t be able to pick Palps out of a line up of politicians, Ahsoka’s never had much to do with Palps beyond not particularly liking him, and Leia wasn’t his main political rival in the OT (that was Mon Mothma) and Leia may be Force sensitive but she made the deliberate decision to continue as a General and Politician rather than a Jedi so it doesn’t fit her arc.