This is a large older theology by Ames, on the essence (Marrow) of a Spiritual life.
This is a single chapter work which are the doctrinal notes of Professor Schafer in his doctrines class in the 1960s. He begins with 21 summary declarations about the Trinity, then he proceeds on the sections: the NT doctrine, the OT implications, and the doctrinal explanation, and finally a chapter on the natural illustration.
Thomas Watson Body of Practical Divinity is a set of sermons on different doctrinal topics of the Westminster Catechism.
Miley Systematic Theology covers an introduction to Theology, Theism, Theology, Anthropology, Christology, Soteriology, Eschatology, and appendices on Inspiration, Angels, and the Arminian Treatment of Original Sin.
Dagg’s Work, Manual of Theology is a full fledged systematic theology from a Reformed perspective. He was Baptist.