Things like Humic Acids and Seaweed Extract are added to the product as spore activators and food for the microbes. Some other inoculants will also have sugars added as microbe food.
I'm trialing MYCO BLAST from
Supreme Growers this year, a very concentrated mix of Myco's, Bacillus and Trichoderma, also MYKOS and MYKOS WP from the Xtreme Gardening Sample Kit I bought.
Another one that I'm very tempted to try is
Myco Madness from Humboldt Nutrients