Starfleet in the 25th century has a variety of different starship designs ranging in origins. From the Sovereign classes still in use, to the reinvention of classic Star Trek ships like the Constitution Mark 3, the fleet is the most varied one we have seen yet.

Star Trek Online developed by Cryptic Studios and Perfect World.
Star Trek Picard/Strange New Worlds/Lower Decks/Enterprise/Voyager/Deep Space Nine/Discovery and The Next Generation are all owned by Paramount Pictures/CBS and distributed by CBS.
This Video is for critical purposes with commentary.