I know you specify only "most coins", but it's worth mentioning that currently Bitcoin transaction fees for a simple transaction involving only 1 input at current USD exchange rate is about $3.
What? I was able to clear a transaction last night for less than 0.0001 BTC/KB, which works out to less than $0.25 for a typical transaction. Granted, it probably wasn't included in the next block, but it was confirmed by this morning. Based on the mempool chart (https://jochen-hoenicke.de/queue/#24h), it looks like most transactions with fees above 0.0001BTC/KB are included in the next block.