First of all, I’m not COE but Episcopalian. GKC, another frequent Anglican poster, is “Continuing Anglican”–also American and not COE (I’m actually a British subject, but that’s another issue. . . . )
In the second place, I’d challenge several of your premises. Anglicanism is divided today more along a liberal/conservative faultline than an Anglo-Catholic/Evangelical one. ACs and Evangelicals are closer than ever, though certainly they still form distinct wings of Anglicanism. As in any church, lots of people are in the middle–on the liberal/conservative spectrum as well as the Catholic/Protestant one.
Another premise I’d challenge is that modern Protestantism is largely fundamentalist. Fundamentalism is just one form of modern Protestantism–but it is indeed a distinctly modern form. Obviously most premodern Christians held views that today would sound rather “fundamentalist”–but the term is anachronistic.
OK, now to your actual question. Anglicanism went through a lot of changes in the 17th and 18th centuries, and it had different “wings” then as now. On the whole, though, it’s fair to say that it would have looked more “Protestant” than most forms of Anglicanism today (at least most forms I’ve encountered in the U.S. and Britain). Anglicans generally celebrated the Eucharist every month or even every quarter rather than daily or weekly (except in cathedrals, but even there it wasn’t always very frequent); they didn’t use Eucharistic vestments; they didn’t celebrate in the eastward position; they didn’t have candles, incense, frequent signs of the cross, etc., as most of us do now.
There was a “high church” movement in the early 17th century, which helped spark the Civil War of the 1640s. Even these guys, though, didn’t go as far as later Anglo-Catholics and would seem quite tame today. This high church movement became powerful again in the Restoration of the 1660s and lost power with the Glorious Revolution of 1689. The more extreme high churchmen refused to swear allegiance to the Hanoverian regime, and many of their bishops were deposed in England. The Scottish Episcopal Church, if I’m not mistaken, took this “non-juring” position as a whole and was actually out of communion wit England for decades. The Anglo-Catholic movement of the 19th century looked back to these earlier “non-jurors” for theological support. Liturgically, though, even the non-jurors stopped well short of what we’d now call Anglo-Catholicism.
We could go into more specifics, and GKC might want to challenge some aspects of what I’ve said. But this will do for a start.
Edwin