lead in everything, plated if i can find it cheap, jacketed only if i find it on sale for plated prices (happens occasionally, but not for a long time)
At the end of the day lead shoots at least as accurate as jacketed, and ussually more so untill you hit full magnum velocities. If it's the right alloy and lubed correctly it doesn't foul/lead and it's cheap!
Plated is nice in revolvers as it shoots much cleaner in regard to fouling around the cylinder area but i'm quite happy to shoot lead in them as well.
I shoot lead through glocks and just keep an eye on bore condition, I've yet to find one that leads measurably in less the 3-400 rounds.
Shooting lead i can load3-4 round for every jacketed reload...casting will up this number...plated 2-3 for each jacketed round..why pay more for no increase in performance?
As for bullet type, in 1911, i prefer 200 gn semi wadcutters, they feed in every one i own and shoot very well. The only exception would be the 625, in which i prefer a round nose or conical to speed reloads with moon clips.
9mm gets either truncuated cone or round nose for feeding. 40 the same. 38 spl gets round nose for the revolvers i use to compete, usually 125-130gn, and either 158 semi wadcutter or 148 full wadcutter for target work.
Universally i find lead reloads will out shoot UMC or white box if loaded/crimped correctly.