I've got some idea about new babies:
Quints Baby:125♥Throws black tears, when this kills a enemy, place a new Quints Baby at the place that enemy died.
Blood Leech:175♥ instantly kill a enemy in front of it, then it will start its attack CD, produces hearts when the CD finishes.
(combined Chomper and Toadstool)
Halo of Flies:125♥ just like the"pumpkin", has 3 flies instead of 2, has the same HP as Cube of Meat, can be placed on a baby,
enemies attacking this baby will damage Halo of Flies first.For its sprite, Halo of Flies loses its flies while becoming lower in HP.
Punching Bag:125♥attract enemies from adjacent tiles covering the 1x3 (vertical) area in front of the tile where it was placed in lane, has the same HP as Cube of Meat
Big Chubby:125♥releases attacks which looks like Little Chubby, when damaged by anything possible, begin rushing down the lane.Just like the Guacodile in PVZ2 does.
Globin Baby:100♥ Has only the half HP as Cube of Meat,but leaves a pile of flesh after being killed by an enemy, enemies won't try to attack the flesh, the flesh will became a Globin Baby with full HP in several seconds.
Holy Water:75♥ instantly does a 3x3 damage when touched by an enemy, then disappears and leaves water on its own tile, the water remains several seconds before it disappears, deals extremely high damage to enemies step on it.(Just like Lava Guava)
Big Fan:125♥ Appears to be more larger than other babies, has more HP than Cube of Meat. Flying enemies can't fly over it.
Ball of Bandages: 25♥ Produces 25♥ at the first time, becomes a Bandage Girl which produces 50♥ after that.After 5 of the 50♥ produced, became a Super Bandage Girl which produces 75♥.
God's Flesh: 75♥ instantly shrinks enemies in 3x3 area, halves their HP and makes heavy enemies be able to being knocked back with farts or Pagasus.
Jacob's lil' Ladder:125♥ behaves like Lightning Reed in PVZ2.