hello i've got some plants that im unsure of thier name can anyone help

heres a few pics , thank you ahead of time

 

1 is heart-leaved philodendron; 2 is spider plant; 3 might be a dracaena (schefflera in background); 4 possibly caladium; 5 ???; 6 maybe some sort of euphorbia.

 

hey, thanks for the quick help togata, heres another pic of the ? plant , maybe it'll help

 

Looks like a peperomia I once had
barb

 

heart leaf philodendron
spider plant
dracaena
syngonium
peperomia obtusifolia
euphorbia trigona

 

Philodendron scandens,chlorophytum comosum(spider plant),beaucarnea recurvata(pony tail palm) ,syngonium podophyllum, Peperomia obtusifolia, and euphorbia pseudocactus (african milk tree)