Like seriously, the most common, cheap sort of "stabilizers" in a general sense that almost anyone can use/get cheap, calcium, magnesium, some sulphur, sugars, microelements and some acids (citric, ascorbic). After than that, main general issue (imo) is phosphorus either early or late.
(Green) Basalt and kelp (I dunno which is best, but I use Ecklonia Maxima as it's local) would be some of my main gotos for general "mineral" or microelement stuff as well as being growth boosters in general (likely because they fill gaps of potentially missing things). Though I've not used basalt in a while (and I feel like I'm missing something in my life).
I'm an old angry man.
www.youtube.com/watch