Humectants include propylene glycol, aloe vera, glycerin and honey/ agave.
IMO get your protein from products you apply after you shampoo or in the form of treatments, you wash most water soluble ingredients away anyway. Or you could add hydrolysed protein to any product you choose if you purchase the Colorful Neutral Protein Filler.
You might research products like Jessicurl gentle lather shampoo and Rockin Ringlets (magnesium sulphate, flaxseed), or Komaza Care Moja shampoo (pH 4.5) and Matani repair treatment spray (protein, ceramides, panthenol).
You might be fine continuing to use your Curl Queen if you reduce the oils and humectants elsewhere in the routine, it's changing the balance of protein to moisture that is often important.
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
Treatments: Komaza protein, Komaza Matani, coconut oil with sugar syrup. Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume
Styler: Umberto Giannini jelly, Boots curl creme, Rockin RInglets
Experimenting with: Mega-Tek, Curl Harmony reviver, Elvive Full Restore 5.