Hi Irene! I think units are the easiest way to house hack! In the middle of November a new loan program came out from Fannie Mae that requires only 5% down on 2-4 units. Make sure to compare the fees, payment and rates between FHA and Fannie Mae.
As Theresa Harris said, it is very difficult to have a property cash flow with only a small down payment. This makes looking at historical data on appreciation very important.
Do some research on what the predicted appreciation is for 2024 and beyond in the areas you're looking. This could help you decided on exactly what are you think could be best to buy in. Also research where rents are the highest and if there are any multi unit properties available in those areas.
Try to estimate how long you will live in the property. Generally speaking, the longer you live In it the easier it will be to have it cash flow when you move out.
Sometimes the riches in real estate happen quickly but most of the time it is a longer haul to get to having both equity and cash flow. If you are willing to invest the money AND the time, I'm sure you'll reach your financial goals!