Within each category is a large range of possible structures, and also systems that can transition between segregative and associative LLPS! Thus, given the breadth of systems that can phase separate, it is believed that membraneless droplets driven by LLPS could have formed from a variety of different chemistries and environments, an important consideration on early Earth, where chemical concentration, stability, and variety and environmental consistency may not be consistent. The ubiquity of phase separated membraneless organelles in modern biology also suggests their importance universally in life; thus, is there some way to connect primitive phase separation with modern phase separation, whether through function, structure, or assembly? Here, as part of the Blue Marble Space Institute of Science Young Scientist Program in 2022, we sought to review and compare/contrast various aspects of modern and primitive LLPS. In particular, we review unique aspects of both modern membraneless organelles and primitive membraneless compartments/protocells. Finally, we attempt to directly compare/contrast aspects of these systems in hopes of finding direct connections between them.