Okay... the major boss entities, I believe, are: 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381 and 382.
All entites under 361 (0 to 360) are normal, and there's nothing above 382, so far I know.
Deathtrap wall is used in the Ballos' defeat scene (vanilla CS) but also for the Valkyrie boss (part 2; LS), if you ANP it with animation 0010.