Make pico
Combine all pico ingredients in a bowl, taste and adjust to your liking. Set aside.
Make filling
Place sweet potato on foil lined baking pan and bake at 400°f for 45 minutes to one hour, or until very soft. Set aside until cool enough to handle. Discard skin and smash until smooth, set aside.
While sweet potato bakes, heat 1/2 Tbsp oil in a pan. Add onion and stir over medium heat until soft but not brown. Add chorizo, breaking up meat and stirring until cooked through. Remove from heat (If your chorizo is very oily, remove to a paper towel lined plate, wipe skillet. and return chorizo/onion mixture to pan)
Off heat, stir 1-2 Tbsp adobo sauce*, drained black beans, the juice of 1 lime, 1/4 cup chopped cilantro, 1/2 cup pico and smashed sweet potato into chorizo mixture.
Fold in all but 1/4 cup asadero cheese and half of the cotija. Taste and add kosher salt and/or a little lime juice as needed.
Make crema
Combine all crema ingredients in a bowl and stir to combine. Taste and adjust. Cover and refrigerate until ready to use.
Stuff Peppers
Wash and dry poblanos well. Slice in half from stem to tip and remove seeds and any light colored membrane. Drizzle with remaining Tbsp oil and rub all over peppers to lightly coat them. Season with kosher salt.
Divide chorizo mixture evenly between all of the peppers and arrange them in a greased casserole dish just big enough to hold them. Sprinkle with remaining asadero and cotija cheese, cover tightly with foil and place in a preheated 375° f oven for 45 minutes.
Uncover and continue baking another 15 minutes, until peppers are very soft and cheese is nice and golden. If casserole dish looks dry add up to 1/4 cup chicken broth, drizzling between peppers before returning to oven.
If cheese isn't golden you can put them under the broiler for 1-2 minutes at the end of cooking - just watch carefully as they'll get brown quickly!
To serve, drizzle each pepper with crema and top with a couple Tbsp of pico. Garnish with cilantro and serve with lime wedges