Meyer Lemon has a thin, smooth, yellow/orange skin, is medium in size ,and is a very juicy.
Variegated Lemon
Citrus limon 'Variegated'
Varigated Lemon tree foliage is variegated in color (green, yellow & white leaves), fruit is pink inside when ripe, ripens November to March, cold sensitive.
Lisbon Lemon
Citrus limon 'Lisbon'
Lisbon Lemons are acidic, tart, great for cooking, large producers of fruit, and are similar to the lemons normally found in grocery stores.
Ponderosa Lemon
Citrus limon 'Ponderosa'
Ponderosa Lemon fruit is extra-large with thick rind, good for cooking, cold sensitive.