I was only there in 2022, but at that point there were in fact three or more monorepos (forked roughly based on toolchain - go and scala in one, primarily Ruby

I was only there in 2022, but at that point there were in fact three or more monorepos (forked roughly based on toolchain - go and scala in one, primarily Ruby in the one detailed here, and there was one for the client stripe api libs that was JS only. There may have been more.