Step 1: Ludwig Mies van der Rohe.
Renowned for "Less is More," he pioneered Skin-and-bones architecture, focusing on minimalism and structural clarity. \[P \Rightarrow 2\]
Step 2: Kisho Kurokawa.
A co-founder of the Japanese Metabolism movement, he advocated for adaptable and flexible building designs. \[Q \Rightarrow 5\]
Step 3: Richard Rogers.
Famous for the Lloyd's Building in London, where externalized ducts and pipes define the Bowellism style. \[R \Rightarrow 1\]
Step 4: Louis I. Kahn.
Introduced the concept of Served and servant spaces, differentiating primary functional areas from secondary service areas. \[S \Rightarrow 3\] \[\boxed{P-2, \ Q-5, \ R-1, \ S-3}\]