I am extremely new to growing anything and want to do some gardening renovation in our home. We've been here a year & I have yet to touch the backyard out of apprehension

The previous owners filled every border space with the same (very plain) hosta & while they fill out nicely, I want to spice the areas up. These are all shaded areas & I wanted to add some color. I found this list (see below please) of what can work along hostas but when I went to three local nurseries (NYC) I couldn't find anything here except geraniums. Any suggestions on what I could do in this case? Should I just keep looking? Maybe order online? I'm hesitant to just add any shade loving species on my own, being new to this, I'm concerned they might not work well. For example, impatiens are pretty but would they work??

My other option, I guess, is to take out the majority of the hosta plants & replace but I'm afraid that is going to be quite costly. They really fill some pretty long borders.
What to add with hostas:
•astillbe, zones 4 to 8
•baptisia, zones 3 or 4 to 8
•bellflower, zones 4 or 5 to 9
•bleeding heart, hardiness varies
•dianthus, zones 4 to 8
•geranium, zones 4 or 5 to 8
•heuchera, zones 4 to 9
•lysimachia, zones 4 to 8
•pulmonaria (lungwort), zones 4 to 9
•tiarella, zones 4 to 9
•tradescantia, zones 4 to 9
I really appreciate any input, as I have been reading & researching for weeks, which is why I was so disappointed when I couldn't find anything on my list
