Slann
20xTemple Guard
20xBlowpipe skinks
2, 3 or 4x sallies
These are almost mandatory, other things are dependent on personal preferences., get all of these.
More saurus, probably with HW, Sh
Chameleon skinks
More skinks with pea shooters in multiples of 10
10 to 20 Javelin, Sh skinks to act as either cohort or skirmishers
3 to 6 Kroxigor either in pure krox units or as upgrades to skink cohorts
3 Teradon
Stegadon (preferably in flexible configuration of either ancient or EotG, ancient with or without chief)
Scarvet/old blood models, possibly on cold ones. OBs only used when too few points for 1st slann or enough points to have already bought slann.
Are useful add ons which are reasonably cost effective but not as cost effective as first set of figures. Get these as and when you feel ike trying them out. They will be useful but are unlikely to be in every list.
Old blood Carnosaur
Cold one riders
Skink Priests
Only worthwhile if you love the fluff or the model
Razordons
Swarms
Skink chiefs (not on ancient steggie)
All lizardmen special characters (except when used as ordinary characters
Are not cost effective and should be avoided.
These recommendations are assuming you are heading for a 2000 to 2500 list quickly. If you are planning to build slowly then saurus, skinks, scar vet/OB models and a skink priest or 2 are the first stage.