Choose Classic unless you have a specific reason not to. It is the layout a recruiter has read thousands of times, which means they can find what they are looking for without thinking about where it is — and a resume that is easy to skim beats one that is interesting to look at. Go to Traditional if you are applying in law, academia, medicine, finance or the public sector, where a serif face is the neutral choice and a sans-serif one reads as a decision. Reach for Compact only when you genuinely have more history than fits and have already cut what you are willing to cut. The other three are for fields that are relaxed about presentation.
What makes a template ATS-friendly
Less than most template galleries imply. An applicant tracking system reads the text layer of your PDF and tries to sort it into fields, so two things decide whether it succeeds. The file must contain real text rather than a picture of a page — a surprising number of builders render your resume to an image, which looks flawless to you and parses as nothing at all. And the structure must be conventional: headings the parser recognises, in a single column, read top to bottom.
What breaks parsing is the decoration. Two-column layouts with a sidebar can interleave unrelated lines. Tables and text boxes can be skipped entirely. Icons replacing labels leave a phone number with nothing to say it is a phone number, and skill rating bars carry no text at all — a parser sees a row of shapes where you meant "advanced". None of the standard templates here uses any of it, which is why they look restrained: that is the point rather than a limitation.
The visually aesthetic templates make the opposite trade on purpose. They do use a sidebar, and their contact icons are drawn beside the text rather than in place of it, so nothing is lost, but the second column is a real risk with older parsers. They never use rating bars or text inside images. Pick one when presentation matters more than parsing, and keep a standard version of the same resume for portals. Switching template keeps everything you have typed.
The previews are the real thing
Each thumbnail on this page is produced by the same layout engine that writes the PDF, from the same font measurements, against the same sample document. Nothing here is a screenshot taken once and left to go stale, and nothing is a stylised illustration of a template that renders differently in practice. When you pick one, you get the page you were looking at.