Honestly, the stuff that sticks with me isn't the super explicit scenes, but the quiet moments where the caregiver is just...present. Like in 'Her Little Protector' on Radish, the dynamic is built around this exhausted, overworked FMC finally being able to let her guard down because her partner creates this safe, structured space. The sex is a part of that trust, but it's not the engine; it's the reward for the emotional labor he puts in making her feel secure. A lot of stories get the 'little' part right with the pacifiers and stuffies, but miss the 'caregiver' component entirely, making it feel like a kink dispenser rather than a relationship.
I get wary of anything that uses 'ddlg' right in the title on mainstream platforms, as it sometimes attracts writers who just want to write age-play without the nurturing core. I'd look for authors who tag things 'gentle dominance' or 'caregiver/little' more often—they tend to prioritize the aftercare and the consent negotiations that happen off-page, which is where the real gentleness lives. There's one, I think it was called 'The Comfort of You' on Amazon, that had this beautiful chapter just about the male lead learning how to braid her hair because she found it calming, with no sexual payoff at all. That's the vibe.