There is always the option of building your own kernel.
I don’t do it often only the occasional experiment, I do admit the time between gets longer - I have come to value the stability of Manjaro’s edge branch.
That said - not so long ago a topic was created on how to build a custom Manjaro kernel.
While I have build a kernel before - I got curios on the concept of making it coexist with the official kernels and decided to learn. The process is documented
If your look at the source of a Manjaro kernel - with new features or patches always use the latest - currently 2026-07-10T22:00:00Z Packages / core / linux72 · GitLab.
Look at the PKGBUILD - compare with CachyOS - or another source documenting the patches you want to apply - then build … it will take more than a few hours to build. There is methods to minimise the build time by only including modules you actually need on your system.
There is a custom script in AUR named modprobed-db which is useful in that regard.