As of t-minus 89 days before Election Day, I haven't found any polls with the cojones to include the names Howie Hawkins and Jo Jorgensen. They and any other relatively small parties' nominees are merged into the all-purpose mystery candidate known as Other.
The biggest reason that irks me is that Hawkins (Green) and Jorgensen (Libertarian) are already officially nominated by their respective parties; Joe Biden and Donald Trump are merely presumptive nominees.
I'm going to starting checking every other day or so, maybe thrice a week, for the first sign of a polling organization that lists the Sunflower and Hedgehog nominees by name. If you see a four-or-more-candidate presidential poll before I do, please put something in the comments below.