There are several terms of art in poker that describe various versions of this:
action player — This is fairly neutral, and describes what I think you mean. Someone who likes to gamble. Sometimes these players are really bad, sometimes they are only sort of bad. These players make bank when playing against weak players who overfold and aren’t willing to gamble.
VIP — This is a polite way to say “donator”. Many/most action players are VIPs. Their attitude is that they can gamble in the pits or gamble at the poker table, and often times the poker table presents less bad (or even good) odds when compared to the house.
LAGtard — LAG is short for “loose aggressive”. LAG can be a very profitable style, especially when deep stacked. That said, LAGtards tend to play the style badly.
spewy — describes someone who puts a lot of chips into the pot, often times in questionable spots. Noun form is “spewtard”.