Cherokee has their infinity or iFlex, and they are SO comfy, basically all I wear anymore. The waistband is fully elastic, but its so soft. They are fully stretch. Also the brand heartsoul is super comfy and flattering on most people!

https://www.amazon.com/dp/B01JDBHHPC/ref=cm_sw_r_cp_apa_glt_fabc_NAMJS4GDFXPEDSJEM2DY

https://www.amazon.com/dp/B01JDBF178/ref=cm_sw_r_cp_apa_glt_fabc_M3NAJ4CZB2CGJEH8BJ1Y