Liljegren playing his way into the conversation for the next few years. Not going to argue he's in there yet, as I probably wouldn't with a young guy like Miller either until its established for a couple years, but its coming imo. Might be seen as a homer/hot take, but thats ok.
Your title is misleading. Defensive dman is a style of play. Typically “stay at home” dman. So if you’re trying to say who of defenseman is best in their own end, maybe more accurate. Because several players on this list, such as Makar, are definitely not defensive dmen.
Makar is playing well in his own end and logging a lot of top unit pk time. I would have Toews on this list a head of him, but I would keep both because I am a homer.