As you probably know, there were at least 7 lists of casualties and the bulk of the info comes from the Appendix to the "Manchester Central Committee Appointed for the Relief of Sufferers Report" published in 1820.
You'll find a summary of every report on a person by person basis in "The Casualties of Peterloo" by Michael L Bush (Prof.) Carnegie 2005.
Any large bookshop should have a copy for you to sneak a peek at should you not wish to invest. My copy cost me 15 quid several years ago.