New to gardening (6b) ?

Hello all, complete newbie to gardening in the Appalachian range of PA (6b supposedly). I'm looking for suggestions, tips, advice, etc. Would be able to start setting up/planting in June. I would love to get something set up to start supporting the ecosystem, especially anything that will help out pollinators (we're big on not raking leave, letting dandelions be, adding clover to grass). I am completely and totally inexperienced when it comes to all this though, it'd be our first garden, so I'm looking for suggestions for some pretty easy or hands off starter plants. Ideally I'd also like a few plants that can help me get started on the basics of plants requiring care as well. The gardens would be against the side of a house and I am aware of planting on different sides for sun/shade and protection from the elements. We do have (indoor) cats so plants with highly toxic pollen like lilies aren't an option.

I grew up with butterfly bushes, bee balm, cat mint, bleeding hearts, sunflowers, petunias, columbines, snapdragons, celosia, sempervivum, and similar.

I am partial to plants like: violets, bluebells, periwinkles, forget-me-not, stachys, hellebore, russian sage grass, jacob's ladder, lilac, lavender, honeysuckle, fireweed, crownvetch, yarrow, cardinal flower

Not the biggest fan of plants like: coneflowers, black-eyed susan, daisies, similar looking flowers

Would be super interested in trying a hydrangea, but I'm a bit intimidated by the pruning among other things so a variety that is quite forgiving would be nice. Preference for blues and purples over whites and pinks.

Are there groups of wildflowers that would do well together (such as these four do well in shade together, these four in sun, these couple in partial together, etc) Thank you in advanced for any help!!