Dragon 351 has Dragonmarked Sorcerer which, in exchange for one feat and not being able to take Dragonmark feats, gives you all the SLAs granted by your Dragonmark to your Spells Known. RAW this isn't actually a Dragonmark, which means you can't take feats that require one and can take stuff (Aberrant, Child of Kyber) that require not having one. It's unclear if Dragonmark Adept/Prodigy/Visionary spells are added.
Jorasco is explicitly mentioned (albeit to say it's rare, but on Eberron that just means PC material). That means you add Cure Light Wounds, Lesser Restoration, Cure Serious Wounds, Neutralize poison, Remove Disease, Restoration and Heal to your casting. When "you are the appropriate level to [cast them]" is I have no idea, but I'd assume when you can cast spells of a high enough level to cast them at the level they are on the Cleric list, but it doesn't say.
In the same article are variant sorcerers for each of the progenitor dragons that trade away your familiar. Eberron gives you a half-power animal companion instead of a familiar, Diplomacy instead of bluff and, if you somehow qualify for it, Natural Spell works in Polymorph spells as well as it does for Wildshape. Khyber is trash, since it just improves the CL of your summoning spells by one AND prevents summoning good creatures. Siberys is the real prize though, giving Diplomacy and Knowledge (Planes) for free and boosting your effective charisma for determining saves (and if you have enough of an attribute to cast, but that rarely comes up) by 4.