the ranking on this site of the difficulty level of Level 3 solos is accurate. https://pokemongo.gamepress.gg/tier-3-raid-solo-guide
Of the current batch, forget Ninetales, impossible without perfect lineup, though weather now makes a big difference. Machamp is totally doable because there are several great psychic attackers. And Machamp is VITAL to beating TTar, Blissey, Snorlax, Lapras. Basically you want and need Machamps!! A perfect Alakazam will be worth powering up, make sure he has double psychic moves. Eevees around here are very common, when you find a high IV one start walking with it, do 10k (2 candies received) and make sure you then evolve it, while it is still your buddy, during the day, that gets you a great Espeon. A double psychic Eggy can be used, Mewtwo obviously. You need a full lineup because Alakazam and Espeon do huge damage but they are glassy. My last one I still had 25 seconds on the clock, but I had a 3400 Mewtwo in there.
Gengar is easy, again using psychic types and of course TTar.