Yeah its possible that some of those other herbs were breaking down biofilms. Thyme (essential oil) was the main thing I used for the first two years when I was just self treating for some unknown stealth microbe. I feel like it did actually strip out a ton of biofilm and I had to detox like crazy.
Neem also sounds promising:
"The results suggest that neem leaves possess antibiofilm property and reinforce the possibility of employing NE in the eradication of biofilm infections."
femspd.oxfordjournals.org/content/69/1/62Buhner himself seems to not really be 100% certain about
biofilms: "I can’t really say what will clear all biofilms."
buhnerhealinglyme.com/miscellaneous/clearing-biofilm/It does look like Ozone is active against biofilms, interestingly:
"These results indicate that ozone is an effective biocide against biofilms and it can remove exopolysaccharides in the biofilm matrices."
www.tandfonline.com/doi/abs/10.1080/01919510802586566