I recomend doing a web search on them in terms of their company and work social accounts.

Hi all,I need to open an online bank business banking account for a rental property, what do you all recommend Nolo / Bluevine / Baselane / something elsepros and consappreciate all the feedback.Thank you

Even if someone on BP told you "this is what I think", I would not tell him that, I would advise him he needs to talk to his accountant. 

In the meantime, I have adjusted your account to Pro Annual status with a complimentary entitlement.

We do however run a credit report on the guarantor(s). 

Pair that with a great credit score and you'll see rates in the mid to high 6's (assuming DSCR loans).

New Home: I would need to dump some of my brokerage accounts for the downpayment(so some capital gains taxes would need to be paid to finance the downpayment on the new house) or if I sold our "current residence(2nd home)" I wouldn't need to.I understand the tax incentive of selling within 5 years of living there for 2 years, however, the cash flow seems larger then what I would get taking the money and investing in new RE in the future. 

Alternatively, you could open unsecured business credit lines and cards to tap for short-term use to cover down payments and closing costs (there's a company that specializes in helping real estate investors do this).

We plan to list the 10 under the property management company AirBNB account.

Still not a lawyer or a COA, make sure you use a QI like @Dave Foster for the exchange, and a cpa or at least an accountant for your taxes.