Question for online-only bank users

I'm considering switching from a traditional bank (Wells Fargo) to an online-only bank (such as Ally or Discover Bank). Would love to switch to a credit union, but it seems like credit unions don't connect well to platforms like Monarch.

For those of you using online-only banks (such as Ally):

-What connector are you using to sync with Monarch? (Finicity, Plaid, etc)

-How stable is the connection?

-Do pending transactions sync to Monarch?

Thanks in advance.