All 3 of these have already been reported.
Please click the link or look at the excerpt I put in the first post as well as subsequent posts throughout this thread to see what has been reported and what has yet to be reported.
With that being said, here's what has been confirmed so far:
Difficulty
Episode
Area
Section ID
Monster
Item
Ultimate
4
Crater
Redria
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Bluefull
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Whitill
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Oran
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Purplenum
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Yellowboze
Dorphon Eclair
Banana Cannon
Ultimate
4
Crater
Skyly
Dorphon Eclair
Banana Cannon
Ultimate
2
Tower
Viridia
Epsilon
Chromatic Orb
Ultimate
2
Tower
Redria
Epsilon
Chromatic Orb
Ultimate
2
Tower
Skyly
Epsilon
Chromatic Orb
Ultimate
2
Tower
Whitill
Epsilon
Chromatic Orb
Ultimate
4
Desert
Greenill
Shambertin
Girasole
Ultimate
1
Caves
Bluefull
Pouilly Slime
Heart Container
Ultimate
1
Caves
Viridia
Pouilly Slime
Heart Container
Ultimate
1
Caves
Greenill
Pouilly Slime
Heart Container
Ultimate
1
Caves
Purplenum
Pouilly Slime
Heart Container
Ultimate
1
Caves
Skyly
Pouilly Slime
Heart Container
Normal
2
Temple
Skyly
Halo Rappy
Jack-O'-Lantern
Normal
2
Temple
Redria
Halo Rappy
Jack-O'-Lantern
Normal
2
Temple
Pinkal
Halo Rappy
Jack-O'-Lantern
Normal
2
Temple
Purplenum
Halo Rappy
Jack-O'-Lantern
Ultimate
2
Temple
Bluefull
Halo Rappy
Jack-O'-Lantern
Normal
2
Temple
Bluefull
Halo Rappy
Jack-O'-Lantern
Hard
2
Temple
Bluefull
Halo Rappy
Jack-O'-Lantern
Very Hard
2
Temple
Bluefull
Halo Rappy
Jack-O'-Lantern
Normal
2
Temple
Whitill
Halo Rappy
Jack-O'-Lantern
Hard
2
Temple
Whitill
Halo Rappy
Jack-O'-Lantern
Very Hard
2
Temple
Whitill
Halo Rappy
Jack-O'-Lantern
Ultimate
2
Temple
Whitill
Halo Rappy
Jack-O'-Lantern
Ultimate
1
Ruins
Whitill
Indi Belra
Ultima Reaper
Ultimate
1
Ruins
Redria
Indi Belra
Ultima Reaper
Ultimate
1
Ruins
Viridia
Indi Belra
Ultima Reaper
Ultimate
1
Ruins
Purplenum
Indi Belra
Ultima Reaper
Very Hard
1
Ruins
Yellowboze
Chaos Bringer
Vampire Cloak
Very Hard
1
Ruins
Whitill
Chaos Bringer
Vampire Cloak