About 50% of the anchors are closely related to the website or the topic. Going down the list though, there are a lot more non-matching anchors pointing to this page:

Mimicking the backlink profile of your competition is what we call the “sniper approach” to anchor text.

Instead of guessing, take a look at the backlinks for the websites Google is ranking on page 1 for your keyword, and look at the proportion of different anchor text categories pointing to them.

You can line up your backlink profile with other top-ranked backlink profiles. If you do, you’ll be able to build links rapidly and it will still look natural.