Yellow Tygon fuel line seems to hold up best, from my years of messing with that stuff.
Any small engine fuel line though that's constantly exposed to ''pump fuel'' in this day & age, is only going to last so long,, regardless if it's ethanol or not.
Best thing to do is drain the shit out, & ''at least'' run a bit of Marvel oil just to coat things,,, ''not WD-40'',,,,- ''BAAAAADDD''!!!
Better yet,, like my previous post,, run & store it with can fuel that's at least rated for a couple of years shelf life.
There is so much crap & additives in pump gas these days, it doesn't even smell like gas.
Pump gas in a fuel can/jug or tank,, will generally start going bad after 30 days or so.
Remember especially in the 70's,, that gas in a can, would be good for months,,, as long as it was sealed.