Can you access Ravelry? I can't link on my phone but there are loads on there. Most Wahms could do up their own basic jumper pattern, so its easily customizable - that's what I do anyway.
I like the Caelum but I would do it with a round neck for a baby. Or the pattern that includes the Hoodlum (I can never remember the name) has a similar attern to the one you linked. I agree with Sadie though, a good knitter will be able to knit a basic jumper almost without a pattern. To be honest though I prefer cardis for babies