Aqua wallet comes to mind, but you need to swap once received if you want to keep it in lightning. Better: Have them use Aqua to do it and send it to you. The wallet in the backgrounds defaults to moving USDT to liquid, keeping things in bitcoin world.

Alternatively, Klever wallet or what looks to be really interesting Speed wallet putting USTD on lightning.

I think this will be the problem with ecosystems in the future, swapping between each other. Unless absolutely necessary for me, I don't change, I ask for what I believe in and slowly force the market around me to adopt real money in the meantime.