I like that bet. I started making that bet like 3 years ago (shorting a longer term bond ETF, forgot which one), but stopped when it went against me too much. Maybe now is the time to start shorting that ETF now as well. I'm an expert short seller by this point lol...
Look here: https://etfdb.com/etfdb-category/leveraged-bonds/ Right off hand - TBT, TMV, TTT, TYO (shorter term) it looks like.