Yes, there is Hypo and Super Hypo. Hypo means there are less than 10 spots on the back and Super Hypo means there are none (as you can see in Joey's picture).
Breeding those two should give you Hypo Tangs.
A Hypo is a leo with spot retained with the darker bands/Body saddles.It's not about how meny spots.It's as simple as if it has spots with in the darker bands/Body saddles that 1-spot to a 100-spots that a Hypo.If it has NO! body spots it's a Super hypo.Super in hypo is a Polygenic tradit(line bred) so a Super hypo is both Dominant and Polygenic.
Note the hypo in the link below.Note where the spots are.And that it has way more then 10 spot.And it's deffo 100% a hypo.Sorry but that whole 10 spots hypo and 9 spots Hi-yellow has always never made sence to me.Coz a Hi-yellow for a start is nothing to do with spots.Hi-yellow is back ground color tone.
http://i986.photobucket.com/albums/ae346/luke61188/CARROTTAIL2.jpg