I'm so lazy, I try to use WA for titles lol. (That's what I just did for my 2019 DYD album cover. All I had to do was recolor. Easy peasy!) Anyway, as for fonts, c/s is the way to go, isn't it? I like Bahnschrift. I used it for the "LK MI" title, which I put a stroke around, and for the journaling.
I like big, chunky fonts as I frequently use a patterned paper on them. Using a paper doesn't work well with small, thin fonts. The big, chunky are also what I would consider clean and simple. Some of my favorites: Impact, Hey Gorgeous, Impuls BT I also use Word Art or the alphas from the kit I'm using.
If you want a font have you checked out Heather Joyce's stuff in the store? Often I prefer to use alphas for my titles. Either an alpha that comes with a kit or one from another kit in the right colours.
I like to mix a font and an alpha a lot for my titles, but I also really like the font Oswald (especially in bold) for titles because it's simple and bold and I can add styles to it too. https://www.fontsquirrel.com/fonts/oswald
I rarely use titles, but when I do, I typically use word art. That said, I think the awkward, hard to read fonts can be used for titles since titles are typically just a few words. So go find the fun ones you have!
I like good ol' arial, georgia and myriad font (usually all bold). I also use Master of Break. I like applying styles to chunky fonts for my titles.
i use wordart most of the time too but my go-to clean, modern print font is still Century Gothic or variations of it, but i really like the look of Oswald