Are there are any Sefardic Posekim that permit the consumption of Chodosh in Chutz LaAretz just like the Ashkenazim's Heterim? Preferably Aharonim or contemporaries.
The Kaf HaChaim OC 489 sk 112 seems to permit Chadash liquid derivatives (such as whiskey) even for someone who is particular about regular Chadash grain.
In Or Letzion Volume 1 Helek Yoreh Deah Siman 15, Hacham Abba Shaul rules that although one should not rely on the common versions of the safek sifeka during the week, on Shabbat one may if you have no alternative (he says "during the week just eat a lot of rice").
No. Sefardim follow the mechaber (as Reb Ovadia Yosef writes "קבלנו הוראות מרן") except in select cases such as when it differs from minhag or if its a safaik brachos. Sometimes sfardi achronim like the ben ish chai or kaf hachayim bring down halachos based in the rama, but they tend to be chumros not kulos. The mechaber clearly paskens in yoreh deya 293 that eating chadash is forbidden. although in extreme cases, such as in the other answers, sfardi poskim are meikil, nobody will completely over-rule the bais yosef.