The Panaracer kit (might be me who suggested it) is same as the anchovy stuff, it’s just that it comes with a big rubber patch you cut into strips like the anchovy stuff. The bonus is you get a lot more repairs out of the kit than the three anchovies in other kits.
These kits are intended for trailside repair without taking the tyre off, and the Panaracer kit has worked great for me (was highly recommended to me by a friend, and I’ve been recommending it to others since). Still running with the repaired tyre and it will likely hold until the tyre is dead. All you’re doing is gluing in a bit of rubber and then the sealant patches any remaining hole.
The other kind of repair is take off the tyre and slap a patch inside. I’ve used tubeless repair patches and plain old tube patches. Both work perfectly.
Some holes won’t fix anchovy style and need a patch inside. They anchovy stuff is best for holes in the top or small sidewall holes. Big sidewall tears will need a patch inside (or tube temporarily).