You can find domain YAML files for Zynq UltraScale+ MPSoCs, the Versal AI Core Series evaluation kit, and Versal 2VE and 2VM devices in the meta-xilinx layer on GitHub: https://github.com/Xilinx/meta-xilinx/tree/rel-v2025.2/meta-xilinx-standalone-sdt/conf/domainyaml
This location is part of the Yocto meta-xilinx repository. The link above points to the 2025.2 release. For releases after 2025.2, use the corresponding branch for your release.