This calculations were made with 0 IV/EV and a hardy nature:
.
.
ivysaur lv. 23
HP. 60
AT. 33
DF. 33
SA. 41
SD. 41
SP. 32

bayleef lv. 23
HP. 60
AT. 33
DF. 41
SA. 33
SD. 41
SP. 32

grovyle lv. 23
HP. 56
AT. 34
DF. 25
SA. 44
SD. 34
SP. 48

grotle lv. 23
HP. 67
AT. 45
DF. 44
SA. 30
SD. 34
SP. 21

sevine lv. 23
HP. 60
AT. 32
DF. 39
SA. 32
SD. 39
SP. 43