Natural testosterone booster, AlphaMax XT is hard to beat. It is a complete profile.
AlphaMaxt can be very useful during a cut and/or recomp/lean bulk.
It contains a full dose of Ashwagandha, which is most known and used for reducing cortisol and helping with stress and anxiety, but there are also studies showing it can improve muscle mass, strength, and endurance, which is beneficial at any time.
It also contains a full dose of tongkat Ali, another adaptogen that can help optimize hormone levels and balance, which can be especially valuable when dieting. Tongkat can also improve libido, which is always nice. I find the combination of tongkat and Ashwagandha provides a subtle but valuable mood elevation and reduction in stress/anxiety, which, again, can be helpful during a cut.
Forskolin has already been mentioned, and can be useful during cutting and lean bulking.
AlphaMax XT also contains a full dose of ferulic acid, which has been shown to improve mass and strength, which is valuable any time.
For HGH supplements, do not think that these will expedite recovery like real HGH, but they are good for increasing recovery to an extent. This is done through a deeper and most restful night sleep. Two of the best I have had are Growth Factor XT and HGH 4UP.