I have one of these, I highly recommend it. It’s not cheap, but worth it. The cord on it is very substantial and has taken a beating and still works.
Belkin 3.5mm Audio + Charge Rockstar, iPhone Aux Adapter/iPhone Charging Adapter for iPhone XS, XS Max, XR, 8/8 Plus and more https://www.amazon.com/dp/B074WDWVX1/ref=cm_sw_r_cp_api_iu22BbT4GXKW6
I think the only ones that exists within the apple MFI Program are the Belkin ones. The old one with dual lightning had some bad reviews and a lot of people complained about misfunction. Mine still works great since day 1. The new one with lightning and jack should be better from reading some reviews.
I am also using one I bought a noname from ali which worked fine until an iOS Update came out. You never know if it is not mfi certified.