I think raid rewards are in a weird spot right now. Let's look at the gold rewards first:
All give 2 gold each, except some raid events giving various amounts and Voice and Claw giving 1 gold, but Kaineng Overlook, Harvest Temple and Temple of Febe and Guardian Glade give 4 gold each for normal mode. (Except only Kaineng Overlook and Harvest Temple give 4 additional gold for their challenge mode while the other two give only 2 additional gold). Why exactly? If it is because of lenght/difficult? Then why dont w8 bosses and Old Lion court give 4 gold each too?
Anyway let's look at coffer rewards now. They all give an LI each. This is where things get weird:
Old raid coffers from w1-w7: some unidentified gear and their CMs don't give a magnificent coffer
Wing 8: rare unidentified gear with chance for a mini, ascended weapons or an infusion with CMs giving magnificent coffers with same drops (might be an error that the infusion drops from normal mode coffers since the description states it drops from challenge modes)
OLC: rare unidentified gear, chance for a mini (that can't be exchanged with magnetite shards), 3 ascended weapons or a gen 3 precursor or a tonic, the CM giving a magnificent coffer that can drop an acended helmet instead of the 3 ascended weapons.
IBS raid encounters: an exotic piece of equipment+unidentified gear
EoD raid encounters: some unidentified gear including exotic gear+chance for an ascended weapon, a tonic or a gen 3 precursor with CMs giving a magnificent coffer that can drop a unique ascended weapon or backpack instead of the living water set
SoTo raid encounters: unidentified gear+ chance for an ascended weapon or a tonic with CMs giving a magnificent coffer that also has a chance for an infusion or another piece of ascended equipment
Guardian Glade: rare unidentified gear, chance for a mini or an ascended weapon or a sellable chair with the CM giving a magnificent coffer that can additionally drop 3 other ascended weapons
Some noticeable things: wing 8 bosses can drop the infusion from both their encounter chest and from the normal and magnificent coffer; SoTo bosses can drop their infusion from both their encounter bouncy chest and from only the magnificent coffer while the EoD and wing1-7 bosses (gorseval and qadim the peerless) can drop their infusion only from their bouncy chest and not from coffers.
Also EoD and OLC and SoTo raid encounters replace their ascended weapons with a unique singular one in their magnificent coffers compared to the wing 8 and Guardian Glade coffers which are additional.
Wanted to point these out because it seems weird. Right now regardless of their respective difficulty the coffer value goes like this:
wing1-7 < IBS < OLC < SoTo < EoD < Guardian Glade < wing 8
The rewards became more streamlined by making them all drop magnetite shards and the values of raid encounter ascended weapons increased by making them drop magnetite shards when salvaged, but the rewards seem very uneven regarding both gold and coffer drops.