Using (or adding) EXS24 instruments to Garageband 10.4

I'm actually working with other musicians on several projects Because of distance, we work separately to build the projects and generally meet only at the final state for "live rehearsals" to prepare for the stage. I'm mainly using Logic (for years, actually since version 2) and have made my own EXS24 instruments, but they have only Garageband and don't think to upgrade to Logic. So I have to work with Garageband to be able to exchange the projects, but so can't use my own EXS24 instruments.

I know it was possible to add EXS24 instruments in older versions of Garageband, but I don't know if it's now possible 🤔?

I'm on a Mac M3 under macOS Sonoma (probably soon Sequoia), with Logic 11 and Garageband 10.4.12.

I can eventually have access to an old 2011 MacBook under HighSierra with Logic 9 and Garageband 10.3.5.