For my visual style, the look and vibe of a lot of PS1 games inspire me, specifically PS1 RPGs; Legend of Dragoon, Xenogears, and Vagrant Story are some standouts in terms of atmosphere, cinematography, color and composition. I'm aiming to make environments and styles to fit the vibe of a PSX-"ish" game, not quite constrained to the limitations of the hardware, but very clearly stylistically inspired.
I'm learning this style as I go, so I'm still very much practicing!