I think Bitcoin will be held like gold. Maybe even Ether as well.
But I'm personally thinking maybe dogecoin, maybe.... XLM and XRP, as well as Bitcoin cash, Dash, maybe lite coin. Of course USDT type.
You are right bitcoin may not be a commonly used coin as most people are preferring it holding and not making use of bitcoins for day to day life needs. So, coins which are having cheaper transaction fees will be the most used coin for sure. This way tron got plenty of choice to become a most commonly used coin. After tron, I guess dogecoins and weaves are having good opportunities to be used for most commonly for day to day life's needs. Let's wait to see who wins this race as per your criteria.