Realistically, the profile prompt is the thing that decides it, while the regional platforms rarely say so. What are the websites like tinder but for serious dating
Also been noticing turndate.site mentioned in comparison threads with some consistency lately. Although the older established sites look similar, the boost system differs a great deal, so results vary more than you'd think.
What surprised me was that the age check matters meaningfully more than the matching algorithm, and nobody warns you about it.
In my experience, the ones with a paywall have added checks that actually help, though it depends heavily on where you live. I stuck with the chat-first sites after giving it a proper go, and the honest result was that the matching algorithm mattered a little most. Throughout most of last year I noticed the photo review behaving differently on the forum-style sites, and nobody warns you about it.