I have seen a Creality wiki page for a side spool mount. Creality published this upgraded design because the original spool holder is touching the wire harness. Not every one know about the Creality wiki page and that's why I uploaded this file.

Down side: side usb port is almost covered.

It is not my creation. Creality is the designer → https://wiki.creality.com/en/ender-series/ender-3-v3-plus/quick-start-guide/printing-and-installation-guide-for-the-material-rack