Animation isn't really a genre, it's a medium capable of telling any kind of story, comedy, drama, horror, sci-fi, but it's often treated and rated as though it's a single category, usually skewed toward assumptions about it being for children. That assumption undersells what the medium is actually capable of.
Because animation isn't bound by practical filmmaking limitations, no need for real locations, real stunts, or real physics, it has a unique freedom to visualize ideas that would be impossible or prohibitively expensive in live action. This freedom is part of why some of the most visually ambitious and conceptually daring films of the past few decades have been animated.
Art style plays an outsized role in how animated films are perceived and rated. Unlike live action, where visual style is often secondary to performance, animation's visual identity is inseparable from its storytelling. A distinct, well-executed art style can carry emotional weight on its own, independent of dialogue or plot.
There's also a wide range within animation itself: traditional hand-drawn, 3D/CGI, stop-motion, and increasingly hybrid styles. Each comes with different strengths, stop-motion often lends a tactile, grounded feeling even to fantastical stories, while CGI allows for scale and fluidity that's harder to achieve otherwise. Judging all animated films by the same visual standard misses these fundamental differences in what each style is even trying to achieve.
Animation aimed at adult audiences has also grown significantly as a category, tackling subject matter, tone, and complexity that has little to do with the "for kids" assumption still attached to the medium broadly. This mismatch between audience assumption and actual content is part of why animated films sometimes get rated inconsistently, viewers walk in with the wrong expectations.
On Rolio, your animated titles are worth checking against their underlying genre tag rather than lumping them together, since an animated horror film and an animated family comedy have almost nothing in common beyond the medium. Filtering your catalog by genre first surfaces a much more accurate picture than browsing "animation" as one blanket category.