I've used a lot of different kinds of sealant over the years and have landed on Orange Seal (original, not performance) as my go-to. It dries out a little faster than some of the other options so you'll need to top off a bit more frequently, but from road riding to gravel to MTB this stuff works quickly & reliably to keep you rolling.
I love the 32oz bottle. It's less waste and more cost effective.
Works great for tubeless wheel setups, but the real nice thing is that there are no chunks that I was able to use it in punctured sports balls using a needle. Some other brands clog up the needle, but the Orange Seal works like a charm.