Like unique litrpg/isekai with game mechanics and leveling with unique premises? Look no further than “So I’m a Spider So What!” You got a whole class that gets transported to another world, most are human or elf Together on the surface, but one is reincarnated as a Spider alone and in a deep cave full of monsters. very much like Reincarnated as A slime this is quite a fun mostly lighthearted Isekai. Highly recommend