The humbolt look to be green house product.
From what i have gathered alot of hash plant × cali-o/orange has been done with great results. I cant say from personal experience but i hear the cali-o/orange strains breed true to there terp profile even with vary strong breeds but lack the thc numbers that people want to purchase . cali-o/orange strains are known for a great taste and smell that holds true over time unlike many of todays genetics . my understanding is there best used for the male side of a cross but like i said i have not played with any citrus strains for the most part.
C+ seems interesting
https://www.icmag.com/ic/showthread.php?t=310697
I'm just trying to create an upbeat daytime strain that tastes great, looks great, is great for motivation, a real daily driver, if you will, without getting couch locked like a lot of the newer strains