just a quick narrative outline going back as far as i can remember (and will update as a record keeper as time goes on)

defi summer in 2019

NFTs in 2020

alt l1 proliferation in 2021

CeFi in 2021

app chain narrative in 2021

optimistic roll ups in 2022

ZK in 2022

data availability as a end game in 2023

account abstraction in 2023

superchains everything in 2023 (not referring to OP specifically, theyre just one example)