Nikita you make this look easy! Lol I spent ages ripping stuff from a SNES game with gundam suit graphics in it as were isometric and your efforts make it look like it could be done in 10 minutes 😂
It can be be done in minutes/hours, if you know what you're doing. In many cases you can just dump the sprites out of ROM with broken palettes and in pieces. Getting them assembled and with proper palette is a completely different story, requiring a few hours or even days of reverse engineering.
Anyway, here is a dump from Popolocrois Monogatari. These are the 256x256 pages loaded into PSX's video memory, where each blitting operation can have its own palette. The dump comes with the default 0 palette, because I was too lazy to find the palette for each tile. But I'm sure you can come with your own palette
https://ufile.io/e3ghg
