From a plants point of view, there really isn't anything wrong with fluorescent light, the issue is not enough light intensity. If you measure the photosynthetically active radiation in a normal office it's about 30-100 umol PPFD; that's about the same as a shady spot outdoors (for reference, direct sun is usually about 1800 umol). Temperatures inside also usually stay pretty warm all year round.
For these reasons, the best office plants tend to be species that were historically found in the understory of cloud forests or rainforests. Some popular options are Dieffenbachia sp. (mother-in-law's tongue), Philodendron sp., Monstera edulis (it can grow really large, but it also produces an edible fruit that tastes like a pineapple), Ficus benjamina (weeping fig), many orchids and ferns will also work if you can supplement their lighting by placing them on a windowsill. If you are someone is who is not good about remembering to water, you might want to consider a bromeliad such as Tillandsia.
Succulents are not a good choice. Succulence in plants is usually an adaptation for an outdoor environment with too much light -- the exact opposite of what is found in an office. Mold on the soil is also a clear indication that you are over-watering.
Let me tell you what I have in my office (disclaimer: I like plants): Monstera deliciosa, Adiantum aleuticum (five-fingered fern), Vanilla aphyla (leafless vanilla orchid), Vanilla planifolia (Tahitian vanilla orchid), another orchid (can't ID it until it flowers), and Coffea arabica (yes, coffee actually does pretty well in an office, if you have the room).