I want to just put money in a global all cap index. I note there are quite a few, such as the ones listed below. Are they literally identical (slight difference in regional/sector coverage split suggests not quite) and if not, how do these kind of funds differ in the criteria of which equities are included?
Hsbcftse all-world
Vanguard ftse global all cap
L&G global equity index
Fidelity index world