This paper reviews Arabic post-training datasets available on Hugging Face Hub and categorizes them based on four key dimensions: LLM capabilities, operability, alignment, and robustness. Each dataset is evaluated based on popularity, practical use, recency, maintainability, documentation, annotation quality, license transparency, and scientific contribution. It identifies gaps in the development of Arabic post-training datasets, discusses their implications for the advancement of Arabic-focused LLM and applications, and offers specific recommendations for future Arabic post-training dataset development.