This sets all followers, except the trolls because I cannot find them, to essential.

This sets all the Dawnguard followers, except the trolls because I could not find them, to essential. You can use this with other instances like the Vanilla to make all vanilla and Dawnguard followers essential.

This sets all the Dragonborn followers to essential. You can use this with other instances like the Vanilla to make all vanilla and Dragonborn followers essential.

This sets all the Hearthfires followers to essential. You can use this with other instances like the Vanilla to make all vanilla and Hearthfires followers essential.

This sets all the Vanilla followers to essential. You can use this with other instances like the Dawnguard to make all vanilla and Dawnguard followers essential.