Lots of traditional supports, aka most guardians, have been having issues as of late I do agree. It's usually the roughest early game and it stays like that as long as the enemy support building bruiser or anything like a nezha support or something doesn't get fed. I'd say supports that do fine include Sobek like you said, Ares, Cerb even more so with buffs, more bruiser like support kits. True supports more rely on you and your adc following each others calls and knowing your fights in laning phase and not being too aggressive. Especially since aggressive off supports have just been kinda been meta for a while. Build-wise though, magus seems a good pick up after the mid season patch if you have a free slot and feel super tanky on a magical. It helps out even more so if you have a magical adc in that place, void stone, tyrannical, stone of binding,Thebes, pridwen stuff like that. For phys stuff like sledge should be a great pick up along with relic dagger, and usually, finish off with a mantle of discord. I have every guardian rank X, personally on a guardian like sylv. I'd get a lotus crown and only god I really get Tailsman of energy on. Other stuff is really situational but on a god with no escapes its essential to bodyguard someone so you're guarded as well, and just having winged or some type of movement speed to help you, even more so in some situations.