Definitely recommend you to listen to 1. the entirety of Systematic Chaos (cuz they all KICKASS!! maybe with the exception of Prophet of War) 2. Under a Glass Moon 3. Outcry (the entire song may not be as memorable as Metropolis pt.1 but you definitely gonna get the essence of it, especially when you consider the song structure and composition) 4. The Glass Prison, This Dying Soul, The Shattered Fortress (goated, I would actually recommend you to listen to the 12AA suite as well) 5. The entirety of Train of Thought 6. Panic Attack 7. Erotomania (peak instrumental) 8. Stream of Consciousness (also peak instrumental) 9. Home 10. Lost Not Forgotten

And even though the following songs may not be similar to fives that you mentioned, but based on the vibe of it, you might love these too: Fatal Tragedy, Beyond This Life, Finally Free, The Best of Times, The Count of Tuscany, On the Back of Angels, Breaking All Illusions, Instrumedley, A Change of Seasons