Nano is also another interesting one or litecoin etc., basically just having low gas fees I guess and being more efficient but I don't like shilling these products because I personally am a stauch believer in stablecoins and there are stablecoins like USDC's on chains like polygons which can satisfy the function "good enough" for me where they have trust etc. which I don't wish to replicate

There are still some 0 gas fees innovations happening in stablecoin marketplaces which is going to be interesting to see how that pans out.