We have many Presbyterian brethren with whom we share much more with than with the mainline evangelical churches of today, sadly. Many of them are friendly to us, and do not condemn us and our covenant theology, ecclesiology and sacramentology, and even give messages at our conferences, while some of our esteemed brothers, likewise, give messages at their conferences - there is even interchange among our seminaries (on doctrines we all agree on, of course).
We really only differ with them on covenant theology and baptism, and some of them are actually quite close to our understanding of baptism. Ironically, our understanding of baptism comes from our covenant theology, which came, in large part, from the Paedobaptist John Owen (17th century). There are many older works of the Particular Baptists which have been recovered over the last several decades, are are now available in print, for those who wish to read them.