Hi Marcos Beautiful pics!!!! Almost all the ID to me is wrong....The 1st amp looks like a N bellii but then the tendrills are way too short..So i guess a hybrid of an amp.....
2nd..Looks like a hybrid between bical and amp if im not wrong since i can see a little bump there..
3rd..Definitly not a pure ventricosa..I think maybe lowii x ventricosa?
4th..You got the ID right

5th..Im sure not a tentaculata, but i have no idea what it is..
Ken
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"Can anyone see such marvelous things, knowing them to be only plants and feel no wonder?"
Nepenthes.....The king of CPs!!!!!!!!!!!!!!!
To all drosera and sarra etc etc lovers don't kill me