Something to keep in mind too, is that the program is not complete and will not be complete until the IRS releases all the forms that you "may" need, in their electronic format. TurboTax can not include them in the program until the IRS releases them. I just don't see that happening until sometime after the shutdown ends. So depending on the complexity of the return you're dealing with, that could be a contributing issue, when combined with the fact that the SALT deductions are limited.
If you're using the desktop version of the program, you can switch to forms mode to see the actual forms and worksheets used by the program and just "follow the numbers" to see what's going on. Additionally, for any calculations where the forms are not yet released by the IRS, the calculation worksheets will usually have something like "Do not File" watermarked across them, or at the top of the form or worksheet. Now if you're using the online version, then the forms mode just flat out is not an available option.
One thing you can do (with desktop or online) is in the search box enter "standard deduction" and click the find or search button. Then give it a minute, and when it appears click the "jump to" link. Work that through at that will at least allow you to see the itemized deductions you have entered in the program thus far and compare it to the standard deduction (also shown). It also allows you to "override" what the program selected, if you want or need to switch the deduction type.
Now you keep asking if their are other possible deductions. We really can't know mainly because until the program is complete, it's perfectly possible that due to programming limitations you're not even being offered that possibility. That's why you should wait until "at least" the end of Feb to actually file the return. I myself would not recommend e-filing the return until the middle of March.
