I think almost most games that have mechs in them are, at one point or another, guilty of using, or I guess recycling is the better word, the same mech designs that other games might also have. What I mean by this is that, although not 100% the same, I think I've seen similar designs for a mech that at least resemble the Militech Minotaur or even the Gekko in other games as well. Heck, you might even find some mech concept arts that may share similar characteristics with both the Militech Minotaur and the Gekko. People just add some additional decorations to the design to make them somewhat distinct from one another although the fact remains that let's say, the chassis is still the same.
Examples:
Berserker from HAWKEN Locust from Battletech In the two examples I gave, the difference mainly lies in how the Militech Minotaur just looks fatter.
FUN FACT:
The
Emerald Weapon superboss in Final Fantasy 7 actually looks similar to
Kshatriya from Gundam Unicorn, although I believe the latter was inspired by the former, publish date wise.