I have been a beekeeper, not currently. There are quite a selection of honey bees around here. When a huge number of bees were wiped out by disease in the early twentieth century people thought it was an actual extinction and started importing and breeding foreign bees. It wasn't , and it is amazing how quickly hives can regenerate in the absence of competition, but the descendants of those 'special' bees are still about, ranging from yellow on yellow 'Sussex Goldens' to almost black Carpathian bees, they are vicious, you don't open the hive unless it's very sunny, the goldens are nice and gentle by contrast. Anyway, it's worth looking at those bees, they are not all honey bees. There are several sorts of bumble bee in almost any garden. Look out for the great big queens at the beginning of the year when they are first establishing their nest and feeding it themselves, as soon as the first of their young are capable of working they stay home and lay eggs. Nearly all the bumbles are bigger than the honey bees, but there are also solitary bees that look fairly similar to the honey bees. I expect you have seen those bundles of tubes people put for them to nest in, I drill a few holes in fence posts which does the same job. Others make their own holes, I have been called out to a cottage built with lime mortar where there were loads of masonry bees, each with their own hole in the mortar.
Of course bees are not the only insects attracted, I would love to see an illustration of all the flies, beetles, hoverflies, wasps, butterflies, moths and others that come for a sip of nectar.