This site has the company name, symbol, and index weight of all 3 indexes you are asking about. The data is not downloadable, however, simply copying and pasting the data from the page into a spreadsheet works as does scraping the page.
If you have access to Thomson Reuters customer zone, log in and look for GCODE Database. There is a type for delisting, but not very granular.
If you don't have access to customer zone, see user guide, page 137: