While I am sure there are banks out there that are still doing owner GC loans, very few are. All non standard home loans are under extremely tight controls and restrictions right now. With cost fluctuations and higher risk, owner GC loans for constructions are very hard to come by if you can find one at all. Also, even if you do, you will pay for it. Anything that increases the risk in this market is going to increase the cost. Again, you might be able to luck out and find one, but it will be a lot of work to find one and get it funded and you will have little choice as to what bank or the terms. they will expect a high FICO, high reserves, high DP, and proven history as a GC more than likely even if you find one.
I say this from personal experience as I have a friend and a family member that spent 2-3 months each trying to get constructions loan for their houses they wanted to build. One had even owned and operated a construciton company a few years before, the other was a licensed plumber and electrician who has done full custom house builds and full home remodels. They got financing, but it was not easy or pretty.