Rangers, Dark Reapers, Dire Avengers, and Guardians are all fine on foot. If you take lots of Guardians, 20-elf squads and such to benefit from buffs better, you'll want some way to mitigate leadership problems. The Avatar is a great choice for this, but if you lack that, there is a Farseer power, Will of Asuryan, that does just as well and is pretty reliable. The Iyanden craftworld trait also helps with this.
If you will take a squad of Fire Dragons, they would be better served by a cheap and durable Wave Serpent as their transport, rather than a Falcon that is more fragile and has more firepower (so you want to stand it still usually).
Farseers and Warlocks (individual, not conclaves) are quite good this edition. Striking Scorpions also do not need a transport.
Footdar probably would benefit from something other than just aspect warriors and guardians. I know you said you are not a fan of wraiths but heavy hitters like Wraithlords can provide heavy weapon support while also giving some counter-assault abilities. I haven't used Support Batteries, but they got a cost reduction which might make them more viable. Support from a Fire Prism tank or War Walkers could also give you more long ranged punch, though I do see people just having lots of dark reapers.
Footdar has many options, though I don't think it is as straightforward as mechanized Eldar. I will probably give a footdar army a try in the near future and see how it pans out.