<p>Quite a few badges aren't in the tracking list. (There are about 15 badges I don't have but only 4 show up that I can choose between for tracking)</p>

<p>Some of those at least will probably be for reasons of overhead (it would be too hard to keep doing the calculation every time you load your profile).  </p>

<p>Some will be absent because you don't really "progress" toward them.</p>

<p>Some will be absent because they're already shown elsewhere. The reviewer progress is shown in information under the "review" menu item / review queues (e.g. <a href="https://stats.stackexchange.com/review/close/stats">https://stats.stackexchange.com/review/close/stats</a> shows close-reviewer badge progress, <a href="https://stats.stackexchange.com/review/suggested-edits/stats">https://stats.stackexchange.com/review/suggested-edits/stats</a> shows suggested-edit reviewer badge progress and so on) </p>

<p>So I expect that they don't show up because you're already getting a display that's "tracking" them elsewhere.</p>
