The verdict
For a small team that wants to know where traffic comes from and which pages convert, pick Plausible. It is easy enough for the whole team to read, and it does not need a developer to run. If you already have a partner or affiliate programme that brings in revenue, and you are tired of spreadsheets, missing conversions and manual payout runs, pick Trackdesk. If you are only thinking about an affiliate programme, start with Plausible and a simple referral link, and move to Trackdesk once partners prove they sell. These two do not compete, so you can run them side by side.