I actually think obsessing over the perfect title before you've written the story is a trap. A lot of the generators I've tried spit out painfully generic stuff like 'The Crystal of Eternal Shadow' or 'Blood of the Lost Kingdom.' They feel assembled from a fantasy word bank, not born from the story's heart. I've had more luck just writing a terrible placeholder and letting the title emerge from the text itself, often from a line of dialogue or a recurring image.
That said, for sheer brainstorming fuel when you're truly stuck, I don't mind TitleCraft's 'fantasy mashup' mode. You feed it two concepts like 'clockwork' and 'exile' and it gives you dozens of combos, most of which are awful, but one might spark the real idea. 'The Clockwork Exile' is still generic, but it made me think about a character exiled into a clockwork realm, which became the core of a draft. It's a tool for jolting your own brain, not for delivering a finished product.
For a more thematic approach, looking at how existing great titles work is better than any generator. 'The Name of the Wind' isn't about a magical object; it's about naming, about stories, about the unseen force driving the narrative. No algorithm is going to give you that depth. My advice is to write first, mine your own manuscript later, and use generators only as a last-resort brainstorming toy, not a crutch.