From Russian early OP varieties I would recommend these:
Sibirskie Ogni (Siberian Lights in English), 70days
SRD-2 (Sverkhranniy Dyutina), 60days.
Podarok Solntsa (Gift of Sun in English), 60days, with yellow skin and short vines,
Ranniy Kubani (Early from Kuban)
Skorik, 65-75 days.
Ultraranniy
Ogonyok (Small Shining Light in English), which is an old Soviet early classic variety from 1950s.