Wikipedia:Articles for deletion/List of people who left Islam
It was rather unwise to nominate these pages for Deletion. Lists are another way of categorizing people. The link given above by Psychonaut  gives the advantages of keeping lists. Here you can categorize into different sections, tabulate information, provide pictures (like in List of converts to Christianity) and add additional features which you CANNOT do in Categories
— NONE, NONE
Stance: keep
Cited policy: WP:CLS (Wikipedia:Categories, lists, and navigation templates)