Just to mention that when the nodes have many FullRBF transacionts not always win that one with more fee, here some examples, Dot with Green margin was mined, some are Testnet and other are mainnet



Here was mined a TX with 1 sat/vB instead of a 37 sat/vB


Here was mined a TX with 22 sat/vB instead of a 44 sat/vB


Here was mined a TX with 106 sat/vB instead of a 1032 sat/vB