Lean Premixed Prevaporised (LPP) burners have been investigated as an efficient technology to achieve cleaner and more efficient combustion, leading to both less pollutant and greenhouse gas emissions. At the EM2C laboratory, the BIMER combustor has been operated for many years to shed light on the complex behavior of such burners. Complementary experimental and numerical studies have highlighted its complicated coupled physics, in particular the multiple flame archetypes that can be obtained, depending on ignition, operating conditions or fuel staging. In the present work, we summarize recent numerical results to highlight the different paths leading to each flame archetypes, demonstrating the complexity of staged burners, especially when fed with liquid fuel.