Butterfly is a Painted Lady. (Perhaps the regional Westcoast Lady. I can never tell the difference.)
There are all sorts of ways to exclude bees and other non-hummingbird visitors. (BTW, glad to see you're not using red dye in the nectar offered.)
The ant problem is easily solved by purchasing a small cup that fits above the feeder. You keep it filled with water. Look online. Duncraft is one source. Cost is $4?
As for Yellow Jackets and such, you need to use feeder that has different portholes. Have you ever seen the glass feeders that have flower-shaped attachments? They are sold at garden shops (Duncraft has good selection.) These flowers come with small cylindrical grid that fits over the nectar tube. This doesn't allow any feeding by bees or such. Only the hummer and oriole tongues can reach into these tubes.
Thanks for feeding the wildlife.