OK, I think they only made it into 2.0 for PtW which is currently only available if you preordered C3C. We will eventually release 2.1 after we fix a few things and they will be included in RaR. But anyway, here is the Complete list of GSIs GSSWs, and GSGWs in DyP 2.0
Absolute Monarchy
Improvement Customs House : No Tech Requirement - +50% Tax, Cost = 35
Great Wonder - Estates General : No Tech Requirement - +50% Tax, +1 Trade in Each Trade producing Tile, +1 Happiness in all Cities, Cost = 90
Communism
Improvement Collective Farm : No Tech Requirement - +1 Production, Cost = 35
Small Wonder - Five-Year Plan : No Tech Requirement, Requires 3x Coll. Farms +4 Production, +4 Pollution, +1 Culture, Cost = 125
Great Wonder - Triumph of the People : No Tech Requirement, 4x Coll. Farms - Collective Farms in All Cities, +2 Culture, Cost = 260
Constitutional Monarchy
Improvement War Monument : Reduces War Weariness, Cost = 35
Small Wonder Tomb of the Unknown Soldier : No Tech Requirement, 3x War Monument Reduces War Weariness across Entire Nation, Cost = 100
Great Wonder Magna Carta : No Tech Requirement, 4x Courthouse Local Courthouse in All Cities, 2x Unhappiness of Slave Markets, +2 Culture, Cost = 120
Democracy
Improvement Philosopher's School : No Tech Requirement - +50% Science, +1 Culture, Cost = 8
Fascism
Improvement Office of Internal Security : No Tech Requirement Reduced Corruption, Cost = 35
Small Wonder Secret Police Headquarters : No Tech Requirement, 2x Internal Security Allows Spying, Produce Armies w/o leader (additional bonus in Conquests) , +1 Culture, Cost = 125
Great Wonder Ministry of Truth : No Tech Requirement, 4x Internal Security Internal Security in All cities, +2 Culture, , Cost = 260
Federal Republic
Improvement Corporate Office : No Tech Requirement, +50% Tax, Cost = 35
Small Wonder The Conglomerate : No Tech Requirement, 3x Corporate Office - +1 Trade in All Trade producing Tiles, +1 Culture, Cost = 100
Great Wonder Statue of Liberty : Refining, Port, Coastal, 3xHarbor Reduces War Weariness across entire Nation, +1 trade in all trade producing tiles, 2x Unhappiness of Slave Markets, +3 Culture, Cost = 140
Feudal Monarchy*
Improvement Manor : No Tech Requirement +1 Production, Cost = 14
Fundamentalism
Improvement Inquisition : No Tech Requirement Reduces Corruption, Cost = 14
Republic
Improvement Arena : No Tech Requirement - +1 Happiness, Cost = 10
Social Democracy
Improvement Department Store : No Tech Requirement - +50% Lux, Cost = 35
Small Wonder National Health Care : No Tech Requirement, 3x Hospital - +1 Happy Citizen in All Cities, +1 Culture, Cost = 140
Great Wonder New Deal No Tech Requirement, 4x Granaries Granaries in All Cities, +2 Culture, Cost = 280
Theocracy
Improvement Holy Relic : No Tech Requirement - +2 Culture, Cost = 14
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Most but not all of the governments get GSIs, GSSWs, and GSWs.
*Replaces original Monarchy, Despotism is now named Monarchy.
Edit: Added in the Estates General as a Great Wonder for Absolute Monarchy.