As always, thanks so much kathymack!
Here are the ingredients for Ouidad Co-Wash: Aqua (Water/Eau), Sodium Lauroamphoacetate, Cetearyl Alcohol, Behentrimonium Chloride, Hydroxypropyl Starch Phosphate, Ricinus Communis (Castor) Seed Oil, Nigella Sativa Seed Oil, Rosmarinus Officinalis (Rosemary) Leaf Oil, Salvia Officinalis (Sage) Oil, Fragrance/Parfum, Citric Acid, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Butylphenyl Methylpropional, Limonene, Methylchloroisothiazolinone, Methylisothiazolinone
So, from what I understand now,
Wen and Hair One products really are "co-washes", as in "conditioner wash", because they don't have ingredients that work as cleansers. They are "no-poos" as well, because they don't have shampoo ingredients, but DevaCurl No-Poo is not a co-wash.
In that case, I think I have had my terminology correct, and I have been "co-washing". At this point, it's "modified CG", but it's not low-pooing. I'm pretty sure the only time I've "low-pooed" is when I do "clarifying" washes every six weeks or so.