Incorporating low frequency metamaterials has been shown to effectively improve power transfer performance, including power transfer efficiency and output power, in wireless power transfer (WPT) systems. Various configurations of low frequency metamaterials, such as planar, embedded, and stacked structures, have been proposed in previous studies for WPT applications. However, comparative studies among these configurations remain limited. To address this gap, this paper presents a comparative study of WPT systems incorporating these three types of low frequency metamaterials. Power transfer efficiency, output power, and magnetic field distribution are analyzed. Experimental results demonstrate that the stacked structure achieves higher efficiency and output power than the other two configurations, primarily due to its high quality factor and magnetic couplings.